Question

If the function f is defined by f(x) = 3x+ 4 then 2f(x) + 4 =?

Answer 1

2f(x) + 4 = 2(3x + 4) +4

Use the property
a(b+c) = ab + ac

2(3x+4) +4 = 2(3x) + 2(4) + 4
= 6x + 8 + 4
= 6x+ 12