Which set does this number. belong too

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

2/3(-6y+9x) expand each expression using the distributive property

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?