ASAP PLEASE PLEASE HELP LIFE OR DEATH SITUATION

Brian pays £180 per week in rent.
His landlord decides to increase the rent by 5%.
How much rent does he pay now?

Elizabeth claims that the fourth root of 2 can be expressed as 2^m since (2^m)^n = 2. find the values of m and n for the case where elizabeth's claim is true.

Ineed with math stuff it involves graphs

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.