Question

Dada a função f(x)=3x+15, calcule A) f(0)-f(3) B) f(5)-f(10) C) f(7-f(3) D) f(5)-f(2) Pfv Alguém Responde♡♡

Answer 1

Resposta:

a) -9

b) -15

c) 12

d) 9

Explicação passo-a-passo:

a) $f(0)-f(3)=3*0+15-(3*3+15)\\f(0)-f(3)=15-24\\f(0)-f(3)=-9$

b) $f(5)-f(10)=3*5+15-(3*10+15)\\f(5)-f(10)=30-45\\f(5)-f(10)=-15$

c) $f(7)-f(3)=3*7+15-(3*3+15)\\f(7)-f(3)=36-24\\f(7)-f(3)=12$

d) $f(5)-f(2)=3*5+15-(3*2+15)\\f(5)-f(2)=30-21\\f(5)-f(2)=9$