Kennedy School is taking the 6th grade students on a field trip to the zoo. There MUST be 1 teacher for every 11 students. There are a total of 48 people going on the field trip. A: How much students are going?
B: How much teachers are going?
C: If 21 students fit on each bus, how many school buses do we need in order to get ALL of the people to the zoo?

Given that abcd is a rhombus, what is the value of x?

Give the functions f(x) = |x + 2| - 3, what is the domain? a,b,c, or d all real numbers x > 2 x < -2 all real numbers and x cannot equal to 2

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.