Question

sendo f(x)=5x-3 qual o valor de:
a) f(6) + f(0)
b) f(5) -2 + 3. f(-1)

Answer 1

a) f(6) = 5 · 6 - 3 = 30 - 3 = 27

f(0) = 5 · 0 - 3 = 0 - 3 = -3

→ f(6) + f(0) = 27 - 3 = 24

b) f(5) = 5 · 5 - 3 = 25 - 3 = 22

f(-1) = 5 · -1 - 3 = - 5 - 3 = - 8

→ f(5) - 2 + 3 · f(-1) = 22 - 2 + 3 · - 8 = 20 - 24 = -4