Write an expression to describe each situation.
Roger owes his mom $5. He
borrows another $6 from her.
(-5) + (-6)
20
Write an expression to describe the situation.
A team gains 20 yards. Then
they lose 7 yards.
20 + (-7)
20
Write an expression to describe the situation.
Suppose the temperature outside is dropping 3 degrees each hour. How much will the temperature change in 8 hours?
8 (-3)
20
Write an expression to describe the situation.
A deep-sea diver descends below the surface of the water at a rate of 60 feet each minute. What is the depth of the diver after 10 minutes?