Question

Find f(-3) for f(x) = 4(2)^x. ОА. 1/8 O B. -32 O C. -24 OD. 1/2

Answer 1

Answer:

D

Step-by-step explanation:

using the rule of exponents

$a^{-m}$ = $\frac{1}{a^{m} }$

substitute x = - 3 into f(x)

f(- 3) = 4($(2)^{-3}$ = 4 × $\frac{1}{2^{3} }$ = 4 × $\frac{1}{8}$ = $\frac{1}{2}$