720 divided by 72 is 80
7 tens divided by 9 is 8
2.25h(60m/hr)(1/3)=45m
So Rick spends 45 minutes studying math per night.
<h3>Answer:</h3>
x + 0.75y = ≤ 35
<h3>Explanation:</h3>
The amount of candy purchased, plus the amount of soda purchased times the amount per soda must be less than or equal to 35.
<em>I hope this helps, let me know if it's wrong though.</em>
7 is the distance from school to his aunt
44/5=8.5
8.5-1.5=7