Adding Functions

Question

f(x)=3/2x+4 plus g(x)=-4 and f(6),g(6)

Answer 1

All we have to do here is plug and chug. 

to 

First they want f(6) , so we replace 6 with x in the f(x) function. 

 

f(6) = 3/2(6) +4 

f(6) = 3/2(6/1) +4

f(6) = 18/2 +4 

f(6) = 9 +4 

f(6) = 13

 

Next we replace replace x in the g(x) function with 6. 

 

Since g(x) = -4 for all x values. g(6) = -4. 

 

f(6) + g(6) =

13 + -4 

9 

 

so f(6) + g(6) = 9