Integer operations

A drought can cause the level of the local water supply to drop by a few inches each week.  Suppose the level of the water supply drops 2 inches each week.  How much will it change in 4 weeks? 

• -16 inches
• -8 inches
• -2 inches

For a conference, a hotel charges $45 per hour for the use of a banquet room, plus $22.95 per person. What is the total cost to rent a banquet room for 3 hours for 180 people?

• $337.95
• $1572.75
• $4266.00
• $8168.85

Adrianna bought 4 spiral notebooks that cost $2.49 each. She also bought 2 boxes of markers for $2.29 each. If she paid with a $20 bill, how much change did she receive?

• $5.46
• $9.22
• $14.62
• $15.22

Roger owes his mom $5.  He borrows another $6 from her.  How much does Roger owe his mother? 

• $11
• $1
• $6
  $6

A team gains 20 yards.  Then they lose 7 yards.  Find the sum. 

• 13 yards
• 27 yards
• -13 yards 
• -27 yards 

Jewel's score was 5 over par on the first 9 holes.  Her score was 4 under par on the second 9 holes.  What was her score? 

• 14
• 1
• -1

A cyclist travesl downhill for 125 feet.  Then she travels up a hill 50 feet.  How far is the cyclist?

• -75 feet
• 175 feet
• 75 feet
• -25 feet 

A team gained 5 yards on their first play of the game.  Then they lost 6 yards.  Find the total change in yardage.  

• -1 yard
• 1 yard
• 11 yards
• -11 yards 

Your checking account is overdrawn by $50.  You write a check for $20.  What is the balance in your account? 

• -$30
• $70
• -$70

Wai and Kuri were digging in the sand at the beach.  Wai dug a hole that was 15 inches below the surface and Kuri dug a hole that was 9 inches below the surface.  Find the difference in the depths of their holes.  

• 24 inches
• 6 inches
• -6 inches
• 20 inches