Pls help me
Second time been asking question help me

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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