Question

Solve each equation if
`f (x) = 2x^(2) - 2` and
`g(x) = 6x + 3`

Answer 1

a) Given: f(x)=2x^2-2 Find: f(3)

f(3)= 2(3)^2-2 => 18-2 => 16

Ans: f(3)=16

b) Given: g(x)=6x+3 Find: x when g(x)=48

48=6x+3 => 45=6x => x=45/6 => x=15/2

Ans: 15/2

c) Given: g(x)=6x+3 Find: g(1/3)

g(1/3)=6(1/3)+3 => 2+5 => 7

Ans: g(1/3)=7