You need at least 5000 points to earn a gift card from your bank. You currently have 2700 points. You deposit money in your savings account and earn an additional 400 points. a. Write an equation and inequality that represents the number of points you need to earn a gift card.

b. Change the above equation or inequality to include the additional 400 points.

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.