Question

dada a função f(x)= 8 x+15, calcule: a) f(0)- f(3)

Answer 1

f(x)=8x+15
f(0)=8.0+15
f(0)=0+15
f(0)=15
f(x)=8x+15
f(3)=8.3+15
f(3)=24+15
f(3)=39
f(0)-f(3)
15-39
-24

Answer 2

f(x) = 8x +15
f(0) = 8.0 +15
f(0) = 0 +15
f(0) = 15

f(x) = 8x +15
f(3) = 8.3 +15
f(3) = 24 +15
f(3) = 39

15 -39
-24

Espero ter ajudado!!