Answer:
25
Step-by-step explanation:
Everytime, you add a value number 2 greater than the previous.
1+3=4
4+5=9
9+7=16
16+9=25
8 times 8 is the closest you can get to 71 without going over, since 8 times 9 would be 72.
The ten cans because its 5 more cans for just 90 more cents
