After 3 hours of waiting tables, Jerome made $25 in tips. After 8 hours of waiting tables, Jerome made $115 dollars in tips. Find the average rate of change of dollars per hour.

Question

After 3 hours of waiting tables, Jerome made $25 in tips. After 8 hours of waiting tables, Jerome made $115 dollars in tips. Find the average rate of change of dollars per hour.<--help please

anonymous · Answer

I think... you would turn the above information into points on a graph. If x is hours and y is dollars, (3, 25) and (8, 115) are both points on such a graph. 
Then you can work it out with the formula from before.

anonymous · Answer

i got 18 does that seem right?