Question

1. Considere f (x) = 3 x e g (x) = 5 x + 1
Determine:
a) f ( 1 ) + g ( 3 ) =
b) o valor de x de modo que g (x) = 11

Answer 1

a) f (1)=3.(1)=3
g(3)=5.(3)+1=16
f(1)+g(3)=3+16=19

b) g(x)=5x+1
11=5x+1
11-1=5x
10=5x
x=10/5=2