What expressions are equivalent to (3x+2y-7)-(5x-4y+6)

How do i put 3(x+7) in distributive property

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?

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?