SAT Math Practice Question #31893 - SATify | SATify

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SAT Math Practice Question #31893 - SATify | SATify

#31893

substitution

roots

equations

quadratic equations

algebra

functions

medium

60 sec

The function $k$ is defined by $k (x) = 2 x^{2} - 18$ . For which positive value of $x$ is $k (x) = 32$ ?

A.

3

B.

4

C.

5

D.

6