Diet cola was on sale last week; it cost $10 for every 4 packs of diet cola. a. How much do 2 packs of diet cola cost?
b. How much does 1 pack of diet cola cost?

Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.

What is the slope of the line shown below?

Find the distance between (7,-6) and (-3,-9)