Question

1. Dada a função f ( x ) = -4x +20 Calcule o valor de :
a) f (3) =
b) f (5,5) =
c) f (7)=

Answer 1

Resposta:

a. f(3) = (-4 ). 3 + 20

f(3) = -12 + 20

f(3) = 8

b. f(5,5) = (-4).5,5 + 20

f(5,5) = -20,0 + 20

f(5,5) = 0

c. f(7) = (-4).7+20

f(7) = -28 + 20

f(7) = -8