Abarrel is full of water and used to water a garden. the rain barrel loses water at the rate of 2.5 gallons of water per minutes. if the rain barrel was full of water, how many minutes does it take for the rain barrel to drain so it contains 25 gallons of water? show or explain your work.

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?