An art studio offers classes for painting and pottery. Each painting class is 1 hour long. Each pottery class is 1.5 hours long. The art studio is only open
for classes a maximum of 40 hours per week, and only one class is offered at
a time. Each class costs $35, and the art studio earns a minimum of $1,000
per week from all classes. Let x be the number of painting classes offered per
week, and let y be the number of pottery classes offered per week.