Given the equation (x+a)^2(x-2)=x^3+bx^2+12x-72 find a and b

1. during first 10 seconds 2. between 10 seconds and 35 seconds 3. during 35 seconds to 40 seconds

If y varies directly as x2 and y=6 when x=6, find the constant of variation.

The revenue each season from tickets at the theme park is represented by t(c)=5x. the cost to pay the employees each season is represented by r(x)=(1.5)^x. examine the graph of the combined function for total profit and estimate the profit after four seasons