Question

dada a função f(x) =8x+15,calcule​

Answer 1

f(0) =8x+15 - f(3) =8x+15

8.0 + 15 - 8.3 + 15

0 + 15 - 24 + 15

30 - 24

6

f(5) =8x+15 - f(10) =8x+15

8.5 + 15 - 8.10 + 15

40 + 15 - 80 + 15

70 - 80

10

f(7) =8x+15 + f(-3) =8x+15

8.7 + 15 + 8(-3) + 15

56 + 15 + (-24) + 15

56 + 15 - 24 + 15

86 - 24

62

f(2) =8x+15 + f(3) =8x+15

8.2 + 15 + 8.3 + 15

16 + 15 + 24 + 15

70

Answer 2

Resposta:

a) -24     b) -40  c) 62 d) 70

Explicação passo-a-passo:

a) f(0) = 8.0 + 15

f(0) = 0 + 15 = 15

e

f(3) = 8.3 + 15

f(3) = 24 + 15 = 39

portanto: f(0) - f(3) será : 15 - 39 = -24

b)  f(5) = 8.5 + 15

    f(5) = 40 + 15

    f(5) = 55

e

f (10) = 8.10  + 15

f (10) = 80 + 15

f (10) =  95

portanto f(5) - f(10) = 55 - 95 = - 40

c) f(7) = 8.7 + 15

   f(7) = 56 + 15

   f(7) = 71

e f(-3) =  8.(-3) + 15

  f(-3) = -24 + 15

  f(-3) = -9

portanto f(7) + f(-3) = 71 + (-9) = 62

d) f(2) = 8.2 + 15

   f(2) = 16 + 15

   f(2) = 31

e

f(3) = 8.3 + 15

f(3) = 24 + 15

f(3) = 39

portanto f(2) + f(3) = 31 + 39 = 70