Yes it is a solution because if you take the equation and plug the point in for the x and y :
4 (2) + 3 (3) < 20
8 + 9 < 20
17 < 20
which is true
10 (2) + (3) > 10
20 + 3> 10
23>10
which is also true
first you divide the amount of miles chris walked with 1/4 or .25 miles then you will get the answer
Answer:
3 + 5 + 7 = 15
they have 15 quarters altogether so answer is 15q