The perimeter of a rectangular tray is 60 inches. The length of the tray is double the width of the tray. Determine the dimensions of the rectangular tray.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.