Question

Dada a função f (x) = 8x + 15, calcule:

a)f(0)–f(3) b)f(5)–f(10)​

Answer 1

Explicação passo-a-passo:

item - A

f(0)

f (x) = 8x + 15

f (0) = 8. 0 + 15

f(0) = 15

...

f(3)

f (x) = 8x + 15

f(3) = 8. 3 + 15

f(3) = 24 + 15

f(3) = 39

...

f(0)–f(3)

15 - 39 = - 24

...

item - B

f(5)

f (x) = 8x + 15

f(5) = 8. 5 + 15

f(5) = 40 + 15

f(5) = 55

...

f(10)

f (x) = 8x + 15

f(10) = 8. 10 + 15

f(10) = 80 + 15

f(10) = 95

...

f(5) - f(10)

55 - 95 = - 40