SAT Math Practice Question #14713 - SATify | SATify

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SAT Math Practice Question #14713 - SATify | SATify

#14713

equations

quadratic equations

hard

45 sec

For which of the following values of $k$ does the equation $4 x^{2} + k x + 49 = 0$ have exactly one real solution?

A.

14

B.

20

C.

28

D.

30