I need help with this math question for the extra credit part of my homework. use the two step and multi-step method and if you can thanks for helping me​

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

Write a ratio and a percent for the shaded area. it is 3x3 and 5x5 grid there is 6 shaded out of a. 6 over 25 , 30% b. 3 over 50 , 6% c.6 over 25 , 24% d. 3 over 10 , 30%