If x=3a+7 and y=9a², what is y in terms of x?

Question

If x=3a+7 and y=9a², what is y in terms of x?

Accepted Answer

(x-7)&sup2;

Answer

3(x-7)&sup2;

Answer

(x-7)&sup2;/3

Answer

(x+7)&sup2;