Maximizing Volume of a Box

The video tutorial explains how to transform a 20x30 inch cardboard sheet into a box by cutting x by x squares from each corner and folding the flaps. The goal is to maximize the box's volume by choosing the optimal x value. The process involves calculating the dimensions of the box as a function of x, determining valid x values, and using a graphing calculator to find the maximum volume. The tutorial concludes with a graphical analysis to approximate the maximum volume and the corresponding x value.

What are the dimensions of the cardboard sheet used in the problem?

• 20 inches by 20 inches

• 30 inches by 30 inches

• 15 inches by 25 inches

• 20 inches by 30 inches

Tags

CCSS.2.G.A.1

CCSS.1.G.A.1

What shape is cut from each corner of the cardboard?

• Triangle

• Rectangle

• Square

• Circle

What is the height of the box formed after folding the cardboard?

• 30 - 2x

• x + 10

• 20 - 2x

• x

How is the width of the box calculated?

• 20 - x

• 30 - 2x

• 20 - 2x

• 30 - x

What is the formula for the volume of the box as a function of x?

• x * (20 - 2x) * (30 - 2x)

• x * (20 - x) * (30 - 2x)

• x * (20 - 2x) * (30 - x)

• x * (20 - x) * (30 - x)

What is the range of valid x values for the volume function?

• 0 to 5

• 0 to 10

• 5 to 10

• 0 to 15

What is the volume of the box when x equals 0?

• 0 cubic inches

• 2000 cubic inches

• 1000 cubic inches

• 500 cubic inches

What tool is used to graph the volume function?

• TI-85 Calculator

• TI-84 Calculator

• TI-89 Calculator

• TI-83 Calculator

What is the approximate maximum volume of the box?

• 1200 cubic inches

• 1000 cubic inches

• 1100 cubic inches

• 1056 cubic inches

At what x value is the maximum volume achieved?

• 4.5

• 3.89

• 3.5

• 2.5