SAT Math Practice Question #15006 - SATify | SATify

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SAT Math Practice Question #15006 - SATify | SATify

#15006

functions

optimization

quadratic equations

hard

90 sec

$k (x) = (x - 5.5) (x - 8.5)$ . For what value of $x$ does the function $k$ reach its minimum?

A.

5.5

B.

6

C.

7

D.

8.5