PLEASE HELP Choose the function whose graph is given by:

A. y = cosx + 1
B. y= sin(x + 1)
C. y = cos(x + 1)
D. y = cos(x - 1)

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?