Question

Find F(5) for f(x)= 1/4(2)^x

Answer 1

Hello!

Substitute x = 5 to find f(5).

⇒ f(5) = 1/4(2)⁵

⇒ f(5) = 32/4

⇒ f(5) = 8

∴ The correct option is A.

Answer 2

If we have a function f(x), f(5) is f(x) but replacing x with 5. The result give us a value of y and a point of the function, (x, y).

`f(5) = (1)/(4) ({2})^(5) = (32)/(4) = 8`

ANSWER A