Question

Use the function below to find f(4).
f(x)= 1/3•4^x

Answer 1

256/3

Explanation:

this ones right

Answer 2

f(4) = 85 1/3 or 85.333...

Explanation:

To find f(4), you must substitute 4 in place of x whenever x appears:

f(x) =
`(1)/(3)` *
`4^(x)`

f(4) =
`(1)/(3)` *
`4^(4)`

Next, simplify the exponent:

f(4) =
`(1)/(3)` * 256

Finally, multiply:

f(4) = 85 1/3 or 85.333...