Question

If f(x)=4x+5 , what is f(-3) and f(3)

A 4 and 5
B -7 and 17
C -3 and 3
D -17 and 7

Answer 1

it would be B: -7 and 17

because 4(-3)+5= -7 and 4(3)+5=17

Answer 2

Answer:
B. -7 and 17

Step-by-step explanation:
Plug in the given number for x.
f(3)=4(3)+5
=12+5
=17

f(-3)=4(-3)+5
=-12+5
= -7