What is the least common multiple of 20 and 14

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?