Sally's Web Design Income Analysis

This video tutorial covers Grade 7 Math, Module 2, Lesson 19, focusing on writing, evaluating, and finding equivalent expressions with rational numbers. The lesson uses a practical example involving Sally, who designs web pages and incurs office rental expenses. The tutorial guides students through selecting variables, forming expressions, and calculating take-home pay after expenses, emphasizing the application of mathematical concepts in real-world scenarios.

What is the main focus of this lesson?

• Writing, evaluating, and finding equivalent expressions with rational numbers

• Solving quadratic equations

• Learning about historical mathematicians

• Understanding geometric shapes

How much does Sally charge per web page?

• $100

• $135

• $150

• $200

What is the monthly rental fee Sally has to pay for her office?

• $700

• $500

• $600

• $650

What variable is used to represent the number of web pages Sally designs?

• X

• W

• Z

• P

Why is the variable W chosen in the problem?

• To represent the cost per web page

• To represent the number of web pages

• To represent the rental fee

• To represent the total income

What is the expression for Sally's take-home pay?

• W * 650 - 135

• 135 * W - 650

• 135 * W + 650

• 650 - 135 * W

What does the expression 135 * W - 650 represent?

• Sally's profit per web page

• Sally's take-home pay after expenses

• Sally's expenses

• Sally's total income

If Sally designs 5 web pages, what is her take-home pay?

• $27.50

• $27.50

• $135.50

• $675

How do you calculate Sally's income from 5 web pages?

• Subtract 5 from 135

• Add 135 to 5

• Divide 135 by 5

• Multiply 135 by 5

What is the final step to find Sally's take-home pay after designing 5 web pages?

• Multiply the total income by 650

• Add 650 to the total income

• Divide the total income by 650

• Subtract 650 from the total income