This would be D because:
3^-5 is 1/243 and 1/1/243 is 243
Answer:

Step-by-step explanation:



Let 't' represent the time of the walk in minutes.
5.1*t = 220
t = 43.14 min
The person needs to walk at least 43.14 minutes to but at least 220 calories.
First you need to add the prices to get 85.55. Then 100 - 85.55 is 14.45.
She will have $14.45 leftover