Use the following information to answer questions 41–43.
One thousand people registered to run a 5-mile road race. Each of the 1,000 people who registered paid either the early, regular, or late registration fee given in the table below.
Ninety percent of all the registered people started the race, and 95% of the people who started the race also finished the race.
41. There were 300 people who paid the early registration fee, 400 people who paid the regular fee, and 300 people who paid the late fee. What is the total revenue from entry fees, in dollars, written in scientific notation?