Carmelo is selling his hockey and baseball card collection. Hockey cards, x, sell for $0.03 and baseball cards, y, sell for $0.05. The number of hockey cards Carmelo sells is at least six times the number of baseball cards he sells. He has at most 525 cards to sell. What is the maximum revenue he can make? Responses $15.75 $15.75 $17.25 $17.25 $26.25 $26.25 $28.50 $28.50 Coordinate graph showing a range from 0 to 550 on both axes. Two linear equations on a grid. One is labeled 6 y equals x and the other is labeled x plus y equals 525. The lines intersect at the point begin ordered pair 450 comma 75 end ordered pair. Points begin ordered pair 0 comma 0 end ordered pair and begin ordered pair 0 comma 525 end ordered pair and begin ordered pair 525 comma 0 end ordered pair are labeled