Question

Let f(x) = 1/2(4)^x - 1. Evaluate f(2) without using a calculator.

a) -1
b) 0
c) 1
d) 3

Answer 1

To evaluate f(2), substitute x = 2 into the function f(x) and simplify.

Step-by-step explanation:

To evaluate f(2), we substitute x = 2 into the function f(x).

f(x) = \frac{1}{2}(4)^x - 1

f(2) = \frac{1}{2}(4)^2 - 1

f(2) = \frac{1}{2}(16) - 1

f(2) = 8 - 1

f(2) = 7