Question

Evaluate the function rule for the given value. y = 15 • 3^x for x = –3

Answer 1

5/9

Explanation:

y = 15 • 3^x

Let x = -3

y = 15 • 3^(-3)

The negative means the exponent goes to the denominator

y = 15 * 1/3^3

= 15 * 1/27

=15/27

Divide the top and bottom by 3

=5/9