7. The common ratio of a geometric series is ſ and the sum of the first 5 terms is 121.
a) What is the value of the first term?
b) Write the first 5 terms of the series.

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

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.