Adrian pays his niece $30 to babysit for 5 hours. Which expression models the change in the amount of Adrian’s cash each hour that his niece babysits?
A) 30-5
B) -30 x 5
C) -30 ÷ 5
D) -5 ÷ 30
What was the change in Adrian’s cash each hour?
A) -$150
B) -$6
C) -$3
D) $25