Question

The functions fand g are defined as follows.

g(x)=2x³ +6
f(x)=-4x-1
Find f(7) and g (-3).
Simplify your answers as much as possible.

f(7)=

g(-3)=

Answer 1

f ( x ) = - 4x - 1
f ( 7 ) = - 4 ( 7 ) - 1
= -28 - 1
= - 29
g ( x ) = 2x^3 + 6
g ( -3 ) = 2 (-3)^3 + 6
= 2 ( -27 ) + 6
= - 54 + 6
= - 48