Answer:
133pi
98% sure this is right
circumference in pi form is the radius time 2 and then put pi after it
Step-by-step explanation:
Answer:
Step-by-step explanation:
rate of change=cost per song
so the first option
Answer:
Step-by-step explanation:
For , we have two cases:
Therefore, for , we have the following cases:
Solving, we have:
.
Therefore,