Which situation could the expression (-6)- 3 represent? A The temperature was - 6 degrees. Then it increased 3 degrees. B Dina spent 6 dollars on a sandwich. Then she spent 3 dollars on a drink. C Elijah dropped an anchor 6 meters into the lake. Then he raised it 3 meters. D Dora had a pack of 6 pencils. Then she gave 3 pencils away.

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?