Quick Check: Category 1 & 4

33. Mr. Flores opened an account with a deposit of $5,000.

• The account earned annual simple interest.

• He did not make any additional deposits or withdrawals.

• At the end of 4 years, the balance of the account was $6,500.

What is the annual interest rate on this account?

• 5.8%

• 7.5%

• 3.3%

• 1.9%

34. Which Venn diagram correctly represents the relationship between rational numbers and irrational numbers?

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35. The list shows the heights of 6 students in inches.

63, 70, 68, 73, 58, 67

What is the mean absolute deviation for these numbers?

• 24

• 66.5

• 4

• 67.5

36. The mass of a textbook is approximately 0.00165 metric ton. How is this number written in scientific notation?

• 165 x 10^-5

• 1.65 x 10^-3

• 16.5 x 10^-4

• 0.165 x 10^-2

37. An eighth-grade student estimated that she needs $8,800 for tuition and fees for each year of college. She already has $5,000 in a savings account. The table shows the projected future value of the account in five years based on different monthly deposits.

The student wants to have enough money saved in five years to pay the tuition and fees for her first two years of college. Based on the table, what is the minimum amount she should deposit in the savings account every month?

• $200

• $300

• $100

• $400

38. An employee put $5,000.00 in a retirement account that offers 9% interest compounded annually. The employee makes no additional deposits or withdrawals. Which amount is closest to the interest the employee will have earned at the end of 5 years?

• $229.09

• $450.00

• $2,250.00

• $2,693.12

39. The scatterplot shows the number of people in each of 8 different households and the average amount of money each household spent on groceries.

Based on the scatterplot, what is the best prediction of the average amount of money spent on groceries for a household that has 7 people?

• $240

• $190

• $210

• $300

40. The list shows the number of songs that five students each downloaded last week.

32, 43, 38, 28, 51

What is the mean absolute deviation of the numbers in the list?

• 34.4

• 6.88

• 38.4

• 7.68

41.The manager of a restaurant recorded how many people were in different groups of customers and how much those groups spent on food and beverages. The scatterplot below shows the data she recorded.

Based on this scatterplot, about how much money would a group of 10 people be expected to spend on food and beverages at this restaurant?

• $105

• $115

• $135

• $150

42.Four plumbers estimated the length of the radius of a cylindrical pipe. The estimates made by the plumbers are listed.

Which list shows these lengths in order from greatest to least?

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