Question

sendo f(x)= 5x + 2, determine:

a) f(-4)

b)o zero de f

Answer 1

a) f(-4) = 5.(-4) + 2
f(-4) = -20 + 2
f(-4) = -18

b) 0 = 5x + 2
5x = -2
x = -2/5 ou -0,4