Question

Given the function f(x) = 4x evaluate

f(-2)

Answer 1

Given value x=-2, just substitute it to
`4^(x)`

=
`4^(-2)` (this uses the property
`a^(-m)=(1)/(a^(m) )`)

= This results in:

`(1)/(4^(2) ) = (1)/(16 )`

Answer 2

the answer =-8

Explanation:

you subsitute -2 for x so its 4(-2) which is -8