It took a submarine 15 seconds to drop 75 feet below the surface of the water. If it descended at a constant rate, what was the change in the submarine’s elevation each second?
A.6 feet per second
b.-5 feet per second
c.1,350 feet per second
d.-1,350 feet per second

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Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25