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English 17 Public

Scale Factors, Proportional Relationships, Percents and Decimals

Study Slideshow

Solve for as many question marks as you can!

I will draw the answer on the board

Use a scale factor of 3 to create a scaled copy of this triangle

Side lengths: 9, 12, 15

A scale drawing of a park is 4 inches wide and 8 inches long. The actual park is 320 feet long. Draw a picture of the actual park.

The park should be 320 feet long and 160 feet wide.

Are A and B scaled copies. Why or why not?

A and B are NOT scaled copies. All sides need to be multiplied by 2!A and B are NOT scaled copies. All sides need to be multiplied by 2!

What is the scale factor from A to B?

1/3

What is the scale factor from B to A?

Everything at a store is on sale. The discount is 30%. If the regular price of a T-shirt is $28. What is the price after the discount?

$19.60

What is 0.7 as a percent?

70%

What is 0.07 as a percent

A fish population increased by 13% in 2020. At the beginning of 2020 there were 67 fish in a lake. How many fish are in the lake at the end of 2020?

75 fish

What is the meaning of the term commission?

A commission is money (a percentage of an item) made by an employee for selling that item

The restaurant bill before the gratuity (tip) is $58.00. If the family tips 15% how much will the bill be after the tip?

$66.70

Complete the table below? What is the C.O.P?

Drawn on Board

Who is eating hot dogs at a faster rate? Explain how you know?

Andre is eating hot dogs at a faster rate. His graph is steeper and therefore has a higher C.O.P.

What is the C.O.P for this graph?

C.O.P = 2 or Unit Rate = 2

Does this table show a proportional relationship? Why or why not?

Yes this table shows a proportional relationship. The Unit Rate = 2