The gross weekly sales at a certain restaurant area normal random variable with mean $2200 and standarddeviation $230. What is the probability(a) the total gross sales over the next 2 weeks exceeds $5000(b) weekly sales exceed $2000 in at least 2 of the next 3 weeks

Michael gose to a theme park and rides two different roller coasters that both begin on a raised platform his height while on the first roller coaster measured in feet from the platform height can be modeled by the following graph where t is the number of seconds since the ride began