Arectangular window is topped with a semicircle on top. the height of the rectangular part is 1 more than 3 times its width , w meters which function represents the total area? a.) a(w) = w(1 + 3w) + pi(w/2)^2 b.) a(w) = w(1 + 3w) + pi(w/2)^2/2 c.) a(w) = w(1 + 3w) + pi(w)^2/2 d.) a(w) = w(1 + 3w) + pi(w)^2

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.