I really need help solving this math problem. -6-5x^2+7x^2-7y^3+y^3+4+2x^2

Suppose a pendulum is l meters long. the time,t,in seconds that it tales to swing back and forth once is given by t=2.01

What is the value of the expression below? 148+(-6)| + |– 35= 7|

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