Question

Dada a função f(x)= 8x+15, calcule: f(2)+f(3)

Answer 1

f(2) + f( 3) 

f(2)=8*2+15 
f(2)=16+15 
f(2)=31 

f(3)=8*3+15 
f(3)=24+15 
f(3)=39 

f(2)+f(3)=31+39 
f(2)+f(3)=70 

Answer 2

f(2) =8x+15 + f(3) =8x+15

8.2 + 15 + 8.3 + 15

16 + 15 + 24 + 15

70

tendeu ?