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QUESTION BANK

The function f is defined by f(x) = . For what value of x is f(x)=12?

A

22

B

4

C

6

D

12

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The questions in this section address a number of important reading and writing skills. Each question includes one or more passages, which may include a table or graph. Read each passage and question carefully, and then choose the best answer to the question based on the passage(s).

All questions in this section are multiple-choice with four answer choices. Each question has a single best answer.

Given the function f(x) = , we want to find the value of x for which f(x)=12.

First, set the equation equal to 12:

=12

Then, divide both sides by 6:

= 2

Finally, square both sides to solve for x :

x =4

Therefore, the correct answer is B)