What is the answer to 2,228 -(-15)? and how would you find the answer?

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.

What are the soultion(s) to the quadratic equation 40- x^2=0

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)