Avery played a note on her piccolo that had an amplitude of 3 and a frequency of 2,637 Hz Which function could be used to describe this note? A) f(x) = 3 sin (2637x)
B) f(x) = 3 sin (2637pix)
C) f(x) = 3 sin (5274x)
D) f(x) = 3 sin (5274pix)

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?