Question

dada a função f(x)=3x+5 calcule :

a) f(-1)=
b) f(2)+f(1)=
c )3.f(-1)+2.f (-4)=

Answer 1

A) 3•(-1) +5

-3+5

2

B) (3•2) +5+(3•1) +5

6+5+3+5

19

C) 3•(3•(-1) +5+2•(3•(-4) +5

9-3+5+6-12+5

10