A letter tile is chosen at Random find the probability of not chosen the letter D

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.

Icould really use some with this question.

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?