Acompany manufactures and sells mini-recorders. a survey of office supply stores indicated that at a price of $82 each, the demand would be four hundred recorders, and at a price of $42 each, the demand would be nine hundred recorders. if a linear relationship between price and demand exists, which of the following equations models the price-demand relationship?

(let x represent the price per mini-recorder and y represent the demand in hundreds.)

a. y= -1/8x + 57/4
b. y= -8x - 114
c. y= -1/8x - 57/4
d. y= -8x + 114