Please help, I WILL MARK YOU *BRAINLIEST* QUESTION: Four more than the quotient of 300 and a number *

A. 4 + (300 - n)
B. (300/n) + 4
C. 4 + 300n
D. (300n +4) + n

The weekly amount spent by a company for travel has an approximately normal distribution with mean = $550 and standard deviation = $40. a) what is the probability that the actual weekly expense will exceed $570 for more than 20 weeks during the next year? (note: one year = 52 weeks) b) what is the probability that actual weekly expenses exceed $580 for 10 or more, but 16 or fewer weeks during the next year?