Explain how do you get 15ft

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.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Which number line correctly shows 0.8 + 0.3?