Question

Dada a função F(x)=4x+16, calcule o valor da expresão F(7)-F(4)

Answer 1

f(x) = 4x + 16
f(7) = 4.7 + 16
f(7) =28 + 16
f(7) = 44

f(4) = 4.4 + 16 
f(4) = 16 + 16
f(4) = 32

f(7) - f(4) = 44 - 32 = 12

Resp.: 12

Answer 2

F(7) = 4*7+16 = 44
F(4)= 4*4+16= 32

F(7)-F(4)= 44-32= 12