Answer:
5-24.97
7-92.31
8- -14.16
Step-by-step explanation:
The formula for exponential growth is:
Total = starting value x (1 + rate)^ time
Using the information in the problem the formula would be:
y = 2300(1.093)^t
If Cheryl paid $8.10 using a ten dollar bill, then her change would be $1.90.