What is the smallest possible number that divided by 132, 450 and 342 gives a result of 5?

Can any one me with the answers to these questions asap?

Find the domain and range of the following function f(x) = 51x - 21+ 4

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?