Rational Numbers

Every month, Ms. Thomas pays her car loan through automatic payments(withdrawals) from her savings account. She pays the same amount on her car loan each month. At the end of the year, her savings account balance changed by −$2,931 from payments made on her car loan.

What is the change in Ms. Thomas’ savings account balance each month due to her car payment?

• -244.25

• 244.25

• 2931

• -2931

Every month, Ms. Thomas pays her car loan through automatic payments(withdrawals) from her savings account. She pays the same amount on her car loan each month. At the end of the year, her savings account balance changed by −$2,931 from payments made on her car loan.

Describe the total change to Ms. Thomas’ savings account balance after making six monthly payments on her car loan.

• 1460.50

• 488.50

• -1465.50

• -488.50

Every month, Ms. Thomas pays her car loan through automatic payments(withdrawals) from her savings account. She pays the same amount on her car loan each month. At the end of the year, her savings account balance changed by −$2,931 from payments made on her car loan.

Which number sentence below models the equation that describe the total change to Ms. Thomas’ savings account balance after making six monthly payments on her car loan.

• -2931 / 12 = -244.25

• -2931 / 6 = -488.50

• 244.25 x 6 = 1465.50

• -244.25 x 6 = -1465.50

Mr. Ferdinand noticed that his alarm clock was not keeping time correctly therefore he was having to set the correct time each day to ensure he got up on time for work. He calculated that his clock was changing each hour by -0.125 minutes.

a) How many minutes is his clock behind in one day?

• 3

• -1.5

• 1.5

• -3

Mr. Ferdinand noticed that his alarm clock was not keeping time correctly therefore he was having to set the correct time each day to ensure he got up on time for work. He calculated that his clock was changing each hour by -0.125 minutes.

If he doesn’t reset his clock, how late will he be after one week?

• 10.5

• 21

• -21

• -10.5

During two 5-day work weeks, the stock market decreased by 120 points. Find the average change per day for the stock market during these two weeks.

• -60

• -12

• -24

• 1200

The table below shows the temperature changes Monday morning in Bedford, New York over a 4-hour period after a cold front came through.

If the beginning temperature was −13°F at 5:00 a.m., what was the temperature at 9:00 a.m.?

• -5

• -4

• -17

• -16

The temperature at 8:15 a.m. was -8 degrees F on an outdoor thermometer. At 4:15 p.m., the temperature on the same thermometer was 13 degrees F. Write a statement that describes how the temperature changed from 8:15 a.m. to 4:15 p.m..

• -21

• 5

• -5

• 21

Rewrite as a single rational number

• 51 2/5

• -75 2/5

• 75 2/5

• -12 2/5

Rewrite as a single rational number

• 14

• -60

• -14

• 60