A delivery person uses a service elevator to bring boxes of books up to an office. The delivery weighs 160lb and each box of books weighs 60lb. The maximum capacity of the elevator is 1470 lb. How many boxes of books can the delivery person bring up at one time.

Solve the equation x/4 - 5= -8 -27 -12 -7 12

Ascientist has discovered an organism that produces five offspring exactly one hour after its own birth, and then goes on to live for one week without producing any additional offspring. each replicated organism also replicates at the same rate. at hour one, there is one organism. at hour two, there are five more organisms. how many total organisms are there at hour seven? 2,801 19,531 19,607 97.655

Which of the following vectors are orthogonal to (2,1)? check all that apply