Answer:
36...? After doing all of the incorrect math.. I got 36. Sry if it's wrong.
Step-by-step explanation:
I suck at math. :/
Difference/original
783 - 540 = 243
243/540 = 0.45
0.45 * 100 = 45
45% = increased percentage
13
He has $170 minus the $25.50 fee= $144.50 left. If each session is $10.50, then divide 144.50 by $10.50 and you get 13.76. He will have enough for 13 help sessions
30sq feet, you just multiply the edge by edge