Question

Evaluate f(-3) for f(x) = 2^x
a. 1/8
b. -8
c. 8
d. -6

Answer 1

A

Explanation:

f(-3) = 2^-3

to get rid of a negative in an exponent, move the whole thing to the denominator.

1/(2^3)

2^3 = 2×2×2

1/(2×2×2)

1/8