Write a function rule to represent the situation:

Question

The volume, V, remaining in a 243 ft^3 (cubed) pile of gravel decreases by .2 ft^3 (cubed) with each shovelful, s, of gravel spread in a walkway.

I think:

V=243 ft^3 - .2 ft^3s

Answer 1

correct. I suspect that it would be better expressed as

V = 243-0.2s

where the axes are labeled
horizontal: shovelfuls
vertical: volume (ft^3)