Socks cost each $3 a pair and scarves cost $5 each. Natalie Attired buys some of each. Let x be the number of pairs of socks and let y be the number of scarves she buys. a. Write an expression for total number of dollars she pays
b. How much would she pay for?
i.7 socks, 4 scarves?
ii.4 pairs of socks, 7 scarves?
c. Write an expression stating that Natalie spends a total of $60 for socks and scarves.
d. Find the intercepts

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.