Question

dada a função do 1 grau f(x)=(1-5x). determinar: a)f(-2)

Answer 1

f(-2) = {1-[5.(-2)]} 
        = [1-(-10)]
        = (1+10) = 11
f(-2) = 11

Answer 2

f(x)=(1-5.x)
f(2)=1-5.-2
f(2)=11