15.28 I think it is the answer bc it said total so u add all the numbers. I added them and it gave me 15.28
Answer:

Step-by-step explanation:
Written in: y=mx+b
Answer:
345x32=11040
546/7=78
789x24=18936
Step-by-step explanation:
Answer:
6x - 4
Step-by-step explanation:
f(x) + g(x)
= 4x + 8 + 2x - 12 ← collect liketerms
= 6x - 4