Evaluate the function rule for the given value. y = 6 • 4x for x = –3 a. 3 divided by 8. b. –72 c. 3 divided by 32. d. 3 divided by 128.

Question

asked Dec 27, 2017 55.7k views

2 Answers

Bojan Komazec · Answer 1 · 2018-01-01T20:35:37+0000

Answer:

The correct option is C.

Explanation:

The given function is

$y=6\cdot 4^x$

Substitute x=-3 in the given function.

$y=6\cdot 4^(-3)$

y=(6)/(4^3)
$[\because x^(-1)=(1)/(x)]$

y=(6)/(64)

Cancel out the common factor.

y=(3)/(32)

Therefore the correct option is C.