Proportional Relationships and Rates

The video tutorial covers solving problems involving proportional relationships using tables, proportions, and equations. It demonstrates calculating unit rates and comparing employee efficiency in checking comments. The lesson concludes with a summary of the methods used.

What are the three strategies mentioned for solving proportional relationship problems?

• Proportions, tables, and equations

• Tables, graphs, and charts

• Equations, graphs, and statistics

• Tables, statistics, and graphs

If Bell earns $432 for 18 hours of work, what is her hourly rate?

• $18 per hour

• $26 per hour

• $20 per hour

• $24 per hour

Using a table, how much would Bell earn for 21 hours of work?

• $520

• $504

• $450

• $480

In the proportion method, what is the result of cross-multiplying 18 hours and 432 dollars?

• 7560

• 8640

• 9072

• 9500

What equation form is used to solve Bell's earnings problem?

• y = ax^2 + bx + c

• y = mx + b

• y = x/k

• y = kx

How many dollars does Bell earn for 21 hours using the equation method?

• $450

• $504

• $520

• $480

Which employee checked comments at the fastest rate?

• Jessica

• Kim

• Shakira

• Andrew

What is the unit rate of comments per minute for Andrew?

• 238.1 comments per minute

• 266.7 comments per minute

• 265 comments per minute

• 331 comments per minute

What is the constant of proportionality for Kim's comment checking rate?

• 266.7

• 265

• 331

• 238.1

What is the reciprocal of the constant of proportionality for Jessica's rate?

• 800

• 1/800

• 800/3

• 3/800