HELP PLEASE 50 POINTS The cost of producing n items is £(950+63n). The items can be sold for £(280-5n) per item. How many items can be produced and sold in order to make a profit? Give your answer in the form M<=n<=N where M and N are both integers.

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?