The senior classes at High School A and High School B planned separate trips to the water park. The senior class at High School A rented and filled 8 vans and 3
buses with 168 students. High School B rented and filled 2 vans and 9 buses
with 306 students. Every van had the same number of students in it as did the
buses. How many students can a van carry? How many students can a bus
carry?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

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.

In a column proof the right column states your reasons