Each week shelly rides her bicycle 3 miles farther than the week before. a) describe the rule that relates the number of weeks she has been trailing to the number of miles she rides b) if she continues training by the same rule how many miles will shelly ride during her sixth week of training?

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.

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab