Help help math math good luck

Cass decided to sell game programs for the hockey game. the printing cost was over 20 cents per program with a selling price of 50 cents each. cass sold all but 50 of the programs, and made a profit of $65. how many programs were printed? letting p represent the number of programs printed, set up an equation that describes this situation. then solve your equation for p.

Use set builder notation to represent the following set: { -3, -2, -1, 0}

What is the length of the unknown leg in the right triangle ?