Question

10.

Evaluate the function rule for the given value. f(x) = 3^x for x = –5

A. 1/243
B. –15
C. 1/729
D. –125

Answer 1

A. 1/243

Explanation:

f(x) = 3^x

Let x = -5

f(-5) = 3^-5

We know a^-b = 1/a^b

f(-5) = 1/3^5

= 1/243