Question 21 Answer and Explanation _ACT December 2021 Form E23 Math Section

Question 21 Answer and Explanation _ACT December 2021 Form E23 Math Section

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21. What value of x makes the equation $-\frac{1}{81}=-{3}^{x}$ true?

A. -4

B. 4

C. 27

D. $-\frac{1}{4}$

E. $\frac{1}{243}$

Answer and Explanation

Your Answer is

Correct Answer is A

Explanation

1/81 = 3^-4