Question

sendo f(x)=6x+12,entao f(5)-3 f(2) e igual a

Answer 1

f(5) = 6.5+12
f(5) = 30+12
f(5) = 42

f(2) = 6.2+12
f(2)= 24

42-(3.24)
42 - 72
= -30