Find an equation of a parabola satisfying the given information. Focus (9, 4), directrix x = - 10

Can some one me, i’ve been asking for so long

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.

Which of the following is true for the relation f(x)=2x^2+1