Find the volume of radius 54cm, volume of sphere 4/3 r³ radius of sphere = 54 or 21/4

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

Match each function with its rate of growth or decay

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.