Sailors need to consider the speed of the wind when adjusting the sails on their boat.
The force F (in pounds per square foot) on a sail when the wind is blowing perpendicular to
the sail can be modeled by F -0.004v where v is the wind speed (in knots).
Find the wind speed that will produce a force of 2.5 pounds per square foot on the sail.

Mason and christian go to the movie theater and purchase refreshments for their friends. mason spends a total of $45.75 on 3 bags of popcorn and 6 drinks. christian spends a total of $71.50 on 6 bags of popcorn and 4 drinks. write a system of equations that can be used to find the price of one bag of popcorn and the price of one drink. using these equations, determine and state the price of a drink, to the nearest cent.