David opened a coffee shop and sold 60 mochas the first day at $2 per cup. he wants to increase the price per cup to increase his revenue. he found out that for every $0.25 increase, x, in the price per cup, the number of cups he sold decreased by 2 per day. how can david find the equation which represents his daily revenue, in dollars, from mocha sales when the price is increased x times? a. multiply (60 − 2x) and (2 + 0.25x) to create the equation y = -0.5x2 + 19x + 120. b. multiply (60 − 2x) and (2 + 0.25x) to create the equation y = -0.5x2 + 11x + 120. c. multiply (60 − 0.25x) and (2 + 2x) to create the equation y = -0.5x2 + 119.5x + 120. d. multiply (60 − 0.25x) and (2 + 2x) to create the equation y = -0.5x2 + 120.5x + 120.