Avery charges a fixed amount for a house call plus an hourly fee of $12.50 for repairing televisions. His bill for repairing a television in a customer's home was $62.00.
If Avery worked 4 hours, what was the fixed amount he charged for the house call?
What was the depth, in meters, of the water in the tank 6 hours after the tank began to be refilled?

If a customer purchases a sweater at its regular price, he or she may purchase a second sweater at a discount of 50%. The discount is taken from the lower-priced sweater.
Hayden bought two sweaters whose regular prices were $40 and $60. After the discount, how much did Hayden pay for the two sweaters?
Exhibit.

By what calendar year does the model predict there will be no frogs in the lake?
Exhibit.

How many hours does it take to empty the generator's gasoline tank?