The school drama club put on the play Bad Hair Day. As bookkeeper for the club, you figured out that 154 tickets were sold bringing in $561 at the end of the week. The ratio of student tickets sold to adult tickets sold was 4 to 3, and the price of a student ticket was $3.00. What percentage of the earnings came from adult tickets sales?

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.