Joel went to the ATM the other day to withdraw some
cash. When he checked his receipt, he noticed that the balance on his savings account
was $500 less than it should have been. After discussing the matter with a customer
service representative at his bank, he realized that someone else had gained access to
his account number and Personal Identification Number (PIN).
Apply Using what you've learned about protecting yourself from fraud, what advice
can you give Joel about the steps he should take to stop any further damage from being done?

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.