Question

dada f(x)= 7x+1 calcule f(12) - f(9) /3

Answer 1

f(x) = 7x + 1

f(12) = 7 * 12 + 1
f(12) = 85
____________________
f(9) = 7 * 9 + 1
f(9) = 64

f(12) - (f(9)/3 =

(85 - 64)/3 =

21/3 =

7 < ------ resposta ..


Forte abraço!