Help ASAP pls I’m not sure if it is -10 or -5

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?

Add. express your answer in simplest form. 12 9/10+2 2/3 = i need u guys to me find the answer to this question

What is the slope of the line that has an equation of y equals x -3