In a city of 40,000 homes, a survey was taken to determine the number with wi-fi access. of the 400 homes surveyed, 320 had wi-fi access. estimate the number of homes in the city that have wi-fi access.
homes

Write the system of equations represented by the matrix. 0 1 2 4 -2 3 6 9 1 0 1 3

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?