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Research suggests that REM sleep in animals is homeostatically regulated: animals compensate for periods of REM sleep deprivation by increasing subsequent REM sleep. When on land, fur seals get enough REM sleep, but during the weeks they're in the water, they get almost none. In a study of fur seals' sleep habits, researchers recorded the REM sleep (as a percentage of baseline) of fur seals once they had returned to land. They concluded that REM sleep may not be homeostatically regulated in fur seals, citing as evidence the fact that the seals in the study<br/><br/>Which choice most effectively uses data from the graph to complete the text?

Reading and WritingInformation and Ideas

To understand how expressions of anger in reviews of products affect readers of those reviews, business scholar Dezhi Yin and colleagues measured study participants' responses to three versions of the same negative review--a control review expressing no anger, a review expressing a high degree of anger, and a review expressing a low degree of anger. Reviewing the data, a student concludes that the mere presence of anger in a review may not negatively affect readers' perceptions of the review, but a high degree of anger in a review does worsen readers' perceptions of the review.<br/><br/>Which choice best describes data from the graph that support the students' conclusion?

Reading and WritingInformation and Ideas

Percentage of Ondo State<br/><br/>Small-Scale Farmers Who Are<br/><br/>Female, by Main Crop Grown<br/><br/>Ondo State region<br/><br/>cereals<br/><br/>root crops<br/><br/>non-root vegetables<br/><br/>Geographer Adebayo Oluwole Eludoyin and his colleagues surveyed small-scale farmers in three locations in Ondo State, Nigeria--which has mountainous terrain in the north, an urbanized center, and coastal terrain in the south--to learn more about their practices, like the types of crops they mainly cultivated. In some regions, female farmers were found to be especially prominent in the cultivation of specific types of crops and even constituted the majority of farmers who cultivated those crops; for instance,<br/><br/>Which choice most effectively uses data from the graph to complete the example?

Reading and WritingInformation and Ideas

Characteristics of the Banks of the<br/><br/>Provo River Downstream of the<br/><br/>Jordanelle Dam<br/><br/>The Jordanelle Dam was built on the Provo River in Utah in 1992. Earth scientist Adriana E. Martinez and colleagues tracked changes to the environment on the banks of the river downstream of the dam, including how much grass and forest cover were present. They concluded that the dam changed the flow of the river in ways that benefited grass plants but didn't benefit trees.<br/><br/>Which choice best describes data from the graph that support Martinez and colleagues' conclusion?

Reading and WritingInformation and Ideas

High levels of public uncertainty about which economic policies a country will adopt can make planning difficult for businesses, but measures of such uncertainty have not tended to be very detailed. Recently, however, economist Sandile Hlatshwayo analyzed trends in news reports to derive measures not only for general economic policy uncertainty but also for uncertainty related to specific areas of economic policy, like tax or trade policy. One revelation of her work is that a general measure may not fully reflect uncertainty about specific areas of policy, as in the case of the United Kingdom, where general economic policy uncertainty ______________ <br/><br/> Which choice most effectively uses data from the graph to illustrate the claim?

Reading and WritingInformation and Ideas

Which choice most effectively uses data from the graph to complete the statement?

Reading and WritingInformation and Ideas

To monitor changes to glaciers in Switzerland, the government periodically measures them for features like total area of ice and mean ice thickness, which are then reported in the Swiss Glacier Inventory. These measurements can be used to compare the glaciers. For example, the Gorner glacier had _______ low. For example, the graph shows that for the West region, the winds were ______ <br/><br/> Which choice most effectively uses data from the graph to complete the example?

Reading and WritingInformation and Ideas

Which choice most effectively uses the data in the graph to complete the example?

Reading and WritingInformation and Ideas

Estimated Temperatures to which<br/><br/>Evron Quarry Artifacts Were Exposed<br/><br/>700<br/><br/>600<br/><br/>500<br/><br/>400<br/><br/>300<br/><br/>200<br/><br/>100<br/><br/>0<br/><br/>200<br/><br/>0<br/><br/>0<br/><br/>0<br/><br/>0<br/><br/>0<br/><br/>0<br/><br/>0<br/><br/>0<br/>0<br/><br/>0<br/>0<br/><br/>0<br/>0<br/><br/>0<br/>0<br/><br/>0<br/>0<br/><br/>0<br/>0<br/>0

Reading and WritingInformation and Ideas

Electric companies that use wind turbines rely on weather forecasts to predict the maximum amount of power, in megawatt-hours (MWh), they can generate using wind so that they can determine how much they’ll need to generate from other sources. When winds are stronger than they were forecast to be, however, the predicted maximum amount of electricity wind turbines could generate will be too low. For example, the graph shows that for the West region, the winds were ______ <br/><br/> Which choice most effectively uses data from the graph to complete the example?

Reading and WritingInformation and Ideas

$\(y>13x-18\)$<br/><br/>For which of the following tables are all the values of \(x\) and their corresponding values of \(y\) solutions to the given inequality?<br/><br/>$\begin{tabular}{|c|c|c|} \hline \(x\) & \(y\) \\ \hline<br/>3 & 21 \\ \hline<br/>5 & 47 \\ \hline<br/>8 & 86 \\ \hline B. & \(x\) & \(y\) \\ \hline<br/>3 & 26 \\ \hline<br/>5 & 42 \\ \hline<br/>8 & 86 \\ \hline C. & \(x\) & \(y\) \\ \hline<br/>3 & 16 \\ \hline<br/>5 & 42 \\ \hline<br/>8 & 81 \\ \hline D. & \(x\) & \(y\)

MathAlgebra

$\(y<6x+2\)$<br/><br/>For which of the following tables are all the values of $\(x\)$ and their corresponding values of $\(y\)$ solutions to the given inequality?<br/><br/>$\begin{tabular}{|c|c|c|} \hline \(x\) & \(y\) \\ \hline<br/>3 & 20 \\ \hline<br/>5 & 32 \\ \hline<br/>7 & 44 \\ \hline B. & \(x\) & \(y\) \\ \hline<br/>3 & 16 \\ \hline<br/>5 & 36 \\ \hline<br/>7 & 40 \\ \hline C. & \(x\) & \(y\) \\ \hline<br/>3 & 16 \\ \hline<br/>5 & 28 \\ \hline<br/>7 & 40 \\ \hline D. & \(x\) & \(y\)

MathAlgebra

A cargo helicopter delivers only 100-pound packages and 120-pound packages. For each delivery trip, the helicopter must carry at least 10 packages, and the total weight of the packages can be at most 1,100 pounds. What is the maximum number of 120-pound packages that the helicopter can carry per trip?

MathAlgebra

The system of equations above has solution $((x,y))$. What is the value of $x$ ?

MathAlgebra

The total cost $f(\bm{x})$, in dollars, to lease a car for 36 months from a particular car dealership is given by<br/><br/>$f(\bm{x})=36\bm{x}+1,000$, where $\bm{x}$ is the monthly payment, in dollars. What is the total cost to lease a car when the monthly payment is $400?

MathAlgebra

The graph of the equation $\alpha x+ky=6$ is a line in the $xy$-plane, where $a$ and $k$ are constants. If the line contains the points $(-2,-6)_{\mbox{\small and}}(0,-3)$, what is the value of $k$ ?

MathAlgebra

A window repair specialist charges $220 for the first two hours of repair plus an hourly fee for each additional hour. The total cost for 5 hours of repair is $400. Which function $\bm{f}$ gives the total cost, in dollars, for $\bm{x}$ hours of repair, where $\bm{x}\geq 2$?

MathAlgebra

Hector used a tool called an auger to remove corn from a storage bin at a constant rate. The bin contained 24,000 bushels of corn when Hector began to use the auger. After 5 hours of using the auger, 19,350 bushels of corn remained in the bin. If the auger continues to remove corn at this rate, what is the total number of hours Hector will have been using the auger when 12,840 bushels of corn remain in the bin?

MathAlgebra

$y\leq 3x+1$<br/><br/>$x-y>1$<br/><br/>Which of the following ordered pairs $x,y$ satisfies the system of inequalities above?

MathAlgebra

A cleaning service that cleans both offices and homes can clean at most 14 places per day. Which inequality represents this situation, where $\bm{f}$ is the number of offices and $\bm{h}$ is the number of homes?

MathAlgebra

Monarch butterflies can fly only with a body temperature of at least 55.0 degrees Fahrenheit (${}^{*}$F). If a monarch butterfly's body temperature is 51.3${}^{\circ}$F, what is the minimum increase needed in its body temperature, in ${}^{*}$F, so that it can fly?

MathAlgebra

$2x+1y=9$<br/><br/>$8x+28y=a$<br/><br/>In the given system of equations, $a$ is a constant. If the system has infinitely many solutions, what is the value of $a$ ?

MathAlgebra

A candle is made of 17 ounces of wax. When the candle is burning, the amount of wax in the candle decreases by 1, ounce every 4 hours. If 6 ounces of wax remain in this candle, for how many hours has it been burning?

MathAlgebra

f $x=40$, what is the value of $x+67$

MathAlgebra

The function $g$ is defined by $g(x)=10x+8$. What is the value of $g(x)$ when $x=8$?

MathAlgebra