Question

na funçao f(x)=-4×+5 calcule 3× f(1)+f(2)-f(3)

Answer 1

Olá paulo

f(x) = -4x + 5

f(1) = -4 + 5 = 1
f(2) = -8 + 5 = -3
f(3) = -12 + 5 = -7 

E = 3f(1) + f(2) - f(3) = 3*1 - 3 + 7 = 7 

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