Real World Situations with Integers

Janice made a withdrawal of $ 445.15 from her checking account to pay her car payment. The integer that represents the change in her checking account is

• $445.15

• -$445.15

Which of these situations can be represented by the integer -50? Choose all that apply

• An decrease of $50 in a bank account

• The temperature on a warm spring day

• The distance driven on the way to the beach

• A decrease of 50 employees

Express an integer: a plane descended (goes down) 3000 ft

• 3000

• 300

• -300

• -3000

The temperature is dropping 3 degrees every hour. How many degrees will the temperature drop in 8 hours?

• -8

• 24

• 8

• -24

A submarine is submerged at 20 feet below the surface. The submarine is now  descending at a rate of 120 feet per minute. Which integer represents the position of the submarine after 3 minutes?

• • -20 feet below the surface

• -380 feet below the surface

• -360 feet below the surface

At 7:00 pm the temperature was 40F.  If the temperature dropped steadily at a rate of 6 degrees per hour, what was the temperature at 11:00 pm?

• 22 degrees

• -16 degrees

• 16 degrees

• 64 degrees

A submarine is submerged at 20 feet below the surface. The submarine is now  descending at a rate of 120 feet per minute. Which integer represents the position of the submarine after 3 minutes?

• • -20 feet below the surface

• -380 feet below the surface

• -360 feet below the surface

At sunrise, the outside temperature was 1° below zero. By lunch time, the temperature rose by 17° and then fell by 4° by night. What was the temperature at the end of the day?

• -12

• -22

• 12

• 22

In a class test, +4 marks were awarded for the correct answers and -1 mark for the wrong answers. Student scores 40 marks. If his correct answers were 11, find his wrong answers.

• 2

• 4

• 6

• 8

The price of jeans was reduced $6 per week for 7 weeks.  By how much did the price of the jeans change over the 7 weeks?

• 42

• -42

• 20

• -20