Notes Over 3.8Convert the currency using the given exchange rate.

dollarsmarks

dollarsmarks

15018943

1

.M

M 284145.

1. Convert $150 U.S dollars to German marks. ($1 U.S. is 1.8943 marks)

You will receive 284 German marks.You will receive 284 German marks.

Notes Over 3.8Convert the currency using the given exchange rate.

dollarsschillings

dollarsschillings

20013 3272

1

.S

S 266544.

2. Convert $200 U.S dollars to Austrian schillings.

($1 U.S. is 13.3272 schillings)

You will receive 2,665 You will receive 2,665 Austrian schillings.Austrian schillings.

Notes Over 3.8Using Ratios to Write an Equation.

Library cards in sample

Total students in sample6

n

3. You took a survey of your classmates and found that 6 of the 27 classmates have public library cards. Use your results to make a prediction for the 855 students enrolled in your schools.

About 190 of the 855 students will have a About 190 of the 855 students will have a library card.library card.

Library cards in school

Total students in school

27n

85527n513027 27

190

Notes Over 3.8Using Ratios to Write an Equation.

Library cards in sample

Total students in sample9

n

4. You took a survey of your classmates and found that 9 of the 27 classmates have public library cards. Use your results to make a prediction for the 930 students enrolled in your schools.

About 310 of the 930 students will have a About 310 of the 930 students will have a library card.library card.

Library cards in school

Total students in school

27n

93027n837027 27

310

Notes Over 3.8Find the percent. Round to the nearest whole percent.

2 88.

36

5. Tax of $2.88 on an item priced at $36

The percent of the tax is 8%.The percent of the tax is 8%.

0 08. 8%

To find the percent, divide the amount of the tax by the price of the item.

Notes Over 3.8Find the percent. Round to the nearest whole percent.

3

16

6. $3 tip on an meal priced at $16

The percent of the tip is 18.75%.The percent of the tip is 18.75%.

01875. 18 75%.

To find the percent, divide the amount of the tip by the price of the meal.

Notes Over 3.8