I assume you need to solve for g?
12g + 6 = 78
- 6
12g = 72
÷ 12
g = 6
I hope this helps! Let me know if you want me to explain anything :)
For 20% out of 100% it would be 1/5 as you need 5 20s for 100
275-100=175 (amount of bonus) 175÷5 (amount per bonus)= 35 total sales
Plug g(x) in for every x in f(x) then substitute 4, you’ll get (f o g)(4) = 34
(x+20)-(x+1)=18
x+20-x-1=18
19=18
It has no solution