Question

Evaluate the function rule for the given value.
y = 15*3^x , for x = -3

Answer 1

A) 5/3
B) 5/27
C) 135
D) 5/9

Answer 2

@Tazmaniadevil

Answer 3

5/9

Answer 4

y = 15*3^x , for x = -3

Replace x with -3. What do you get?

Answer 5

You have \(15 \times 3^{-3}\). In order to change the sign of an exponent, take the reciprocal, i.e. \(3^{-3} = \frac{1}{3^3}\). So now you have\[15\times 3^{-3} = 15\times \frac{ 1 }{ 3^3 } = \frac{15}{3^3}\]Now, evaluate \(3^3\), and simplify the fraction.

Answer 6

15/27 @ospreytriple

Answer 7

and then we simplify

Answer 8

divide them by 3

Answer 9

and we get 5/9

Answer 10

I have about 2 same questions, I'll try to solve them and can u tell me if im right

Answer 11

You are correct. Good job.