On a coordinate plane, 2 solid straight lines are shown. The first line has a negative slope and goes through (0, 42) and (42, 0). Everything to the right of the line is shaded. The second line has a negative slope and goes through (25, 35) and (32, 0). Everything to the left of the line is shaded. A collection of quarters and nickels contains at least 42 coins and is worth at most $8.00. If the collection contains 25 quarters, how many nickels can be in the collection?

Let x = the number of quarters.

Let y = the number of nickels.

There are at least
nickels, but no more than
nickels.