Question

'Dada a função F(x)+26)=-16x+1 , calcular f(-15)

Answer 1

f(x) + 26 = - 16x + 1
f(x) = - 16x + 1 - 26
f(x) = - 16x - 25

F(- 15) = -16.(-15) - 25
f(- 15) = 240 - 25
f(- 15) = 215

Answer 2

$\Large \sf f(x) + 26 = -16x + 1 \dfrac {} {}\\\Large \sf f(-15) + 26 = -16.(-15) + 1 \dfrac {} {}\\\Large \sf f(-15) + 26 = 240 + 1 \dfrac {} {}\\\Large \sf f(-15) = 240 + 1 - 26 \dfrac {} {}\\\Large \sf f(-15) = 215 \dfrac {} {}$