Sean wants to buy a bike. bike a costs $130. bike b costs $160 but is on sale for 20% off the original price. which bike is the better buy for sean?

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.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.