Mr. Wonka optimized your team’s box to maximize chocolate bar sales. The new volume is (x^3-9x) inches ^3, the length is (x+3) and the height is x inches. What is the width of his new box?

Can some one me with this math problem?

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0