Question

QUESTÃO 04: Dado a função
) - 2x + 1 o valor de f(10)-f(5) + f(2)
A) 2
C) 10
D) 7
E) 3​

Answer 1

f(10) = -19

f(x) = - 2x + 1

f(10) = - 2.10+ 1

f(10) = - 20+ 1

f(10) = - 19

f(5) = -9

f(5) = -2.5 + 1

f(5) = -10 + 1

f(5) -9

f(2) = -3

f(2) = -2.2 + 1

f(2) = - 4 + 1

f( 2) = -3

f(10)-f(5) + f(2)

-19 - ( -9) + (-3)

-19 + 9 - 3

- 10 - 3

- 13