Inequality Question

Question

Eva has x dimes and y quarters. She has at most 18 coins worth a minimum of $3 combined. Solve this system of inequalities graphically and determine one possible solution.

Answer 1

x+y< 18

10x + 25y < 300

10x + 10y < 180

subtract to get

15y < 120

y< 8 quarters max

x< 10 dimes max