Two companies, A and B, drill wells in a rural area. Company A charges a flat fee

Question:

Two companies, A and B, drill wells in a rural area. Company A charges a flat fee of $3500 to drill a well regardless of its depth. Company B charges $1000 plus $12 per foot to drill a well. The depths of wells drilled in this area have a normal with a mean of 250 feet and a standard deviation of 40 feet.
a. What is the probability that Company B would charge more than Company A to drill a well?
b. Find the mean amount charged by Company B to drill a well.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...