7. (08.03) Consider the following pair of equations:
y = -2x + 8
y X-1
Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form. (5 points)

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3