Answer:
7x+8
Step-by-step explanation:
12x-5x + 6 + 8
6feet by 5feet by 4feet
7feet by 6feet by 4feet
8feet by 3feet by 7feet
x = 2
y=6
6 + 2 = 8
2 + 6 x 2 = 14
Hope this helps
Have a blessed day!
c