Gareth has $2,000 to invest. putting the money in a savings account at his local bank will earn him 2.2% annual interest and gives him the ability to make atm withdrawals from that bank’s atms. putting the money in an online savings account will earn him 4.85% annual interest, but he will be charged $3 every time he makes an atm withdrawal. assuming that gareth’s atm withdrawals do not affect the amount of interest he earns, roughly how many atm withdrawals must gareth make every year for the local savings account to be a better deal than the online savings account?

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.