Rates of Work and Speed

Mr. Holcomb explains lesson 22 on constant rates, covering exercises on painting, walking, typing, and building. Each exercise involves calculating and comparing rates, forming linear equations, and graphing. The lesson concludes with strategies for comparing proportional relationships.

What is the constant rate at which Peter paints the wall?

• 3 square feet per minute

• 4 square feet per minute

• 2 square feet per minute

• 1 square foot per minute

How is the linear equation for Peter's painting rate expressed?

• y = x + 2

• y = 2x

• y = x - 2

• y = 2x + 1

What is the total area Peter paints in 8 minutes?

• 14 square feet

• 12 square feet

• 18 square feet

• 16 square feet

How many square feet does Peter paint in two hours?

• 180 square feet

• 300 square feet

• 120 square feet

• 240 square feet

Who walks faster, Nathan or Nicole?

• Cannot be determined

• Both walk at the same speed

• Nicole

• Nathan

What is Nicole's walking rate in miles per hour?

• 5 miles per hour

• 6 miles per hour

• 3 and 4/7 miles per hour

• 4 miles per hour

What is Susan's typing rate in pages per minute?

• 0.2 pages per minute

• 0.3 pages per minute

• 0.4 pages per minute

• 0.5 pages per minute

Who types faster, Susan or Ann?

• Both type at the same speed

• Ann

• Susan

• Cannot be determined

How many birdhouses can Phil build in 5 days?

• 2 birdhouses

• 3 birdhouses

• 4 birdhouses

• 5 birdhouses

Who builds birdhouses faster, Phil or Carl?

• Phil

• Carl

• Both build at the same speed

• Cannot be determined