Question

Dada a funcao f(x) = -2x+4, determine

a)f(3)

b) x tal que f(x)= - 40

URGENTE

Answer 1

a) F(3) = y

x=3

-2.3 + 4 = y

-6 + 4= -2

y= -2

b) -40 = -2x+4

-40 - 4 = -2x

(-1) -44 = -2x (-1)

44 = 2x

44/2 = x

22= x

De nada <3