7x+3(8x+7)? simplify or expand the expression

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.

I'll give brainliest if you answer right : )

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?