Answer:
The length of the box is 10 feet.
Step-by-step explanation:
You have to work backwards to find volume, so just divide the volume (100) by the height (2) then divide that by the width (5) and you get your answer, 10
-2x + 5 = -4k
t=4
explanation
2(t+1)=10
2t+2=10
2t=8