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

$13,400

B: 

$13,000

C: 

$15,400

D: 

$37,400

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