Three plus the reciprocal of a number equals 7 divided by that number. what is the number?

Answer this question, only if you know the answer. 30 points and brainliest!

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

The verbal translation for the difference of m and 7 increased by 15