Question

dada a funçao f(x)=4x+5; a)determine f(x)=13. b)determine f(x)=21. c)determine f(x)=37.

Answer 1

f(x)=4x+5
f(x)=13
4x+5=13
4x=13-5
4x=8
x=8/4
x=2

f(x)=21
4x+5=21
4x=21-5
4x=16
x=16/4
x=4

f(x)=37
4x+5=37
4x=37-5
4x=32
x=32/4
x=8