Let X be the random variable representing the number
of coins that Matt set aside after three flips.

We have to run n from 0 to 100 and m from 0 to (100-n),
Find the binomial law, then compute the mean like this:

Hope this gives a hint.
A would be the number of days you attend while B would be the number of hours you attend so if the chare was 20 dollars per hour you would be at test center B for 5 hours. A would be 5 days
Answer:
The correct answer will be B
Step-by-step explanation:
I can’t see it it’s to blurry for me