Solve this system
y=-3x-14
y=2x+6

Which representation has a constant of variation of -2.5

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.