Scale Factors and Financial Calculations

The video tutorial covers three main problems: calculating the sale price of paintings, determining the scale factor and missing sides of similar trapezoids, and finding out when two individuals will have the same amount of money based on their savings and spending habits. Each problem is solved using mathematical equations and properties, such as the inverse property of addition and multiplication.

What is the total sale amount for the three paintings in problem 738?

• $15,000

• $10,000

• $12,000

• $13,500

If the second painting sold for $2,000, how much did the first painting sell for?

• $7,500

• $10,000

• $12,000

• $5,000

What is the scale factor from the big trapezoid to the small trapezoid in problem 740?

• 5/3

• 3/5

• 2/3

• 3/2

If the scale factor from small to big is 3/5, what is the scale factor from big to small?

• 5/3

• 3/5

• 2/3

• 3/2

In problem 740, what is the length of the missing side X if the corresponding side is 15 meters?

• 12 meters

• 18 meters

• 9 meters

• 15 meters

What is the length of the missing side Y if the corresponding side is 18 meters?

• 20 meters

• 25 meters

• 30 meters

• 35 meters

In problem 741, how much money does Judy start with?

• $20

• $172

• $50

• $100

How much does Ida have initially in problem 741?

• $20

• $172

• $100

• $50

How much does Judy save per week?

• $4

• $6

• $8

• $10

How much does Ida spend per week?

• $2

• $4

• $6

• $8