Find all points (I, y) on the graph of the equation 2x2 + 5y? = 4x + 9y where the tangent line is: a. horizontal (I, y) = (Round each coordinate to the nearest hundredth, when necessary) b. vertical (z, y) = The number of cars produced when I dollars is spent on labor and y dollars is spent on capital invested by a manufacturer can be modeled by the equation 50xly = 600. dy a. Find a formula in terms of c and y for dy b. Find the value of dy at the point (27, 8). dy (27, 8) = A manufacturer can produce 2970 cell phones when I dollars is spent on labor and 1/ dollars is spent on capital. The equation that relates z and y is 55ziyi = 2970. dy a. Find a formula in terms of I and y ford dy dy b. Find the value of -at the point (81, 16). (81, 16) = The volume of a right circular cone of radius z and height 1 is given by V = = ary. Suppose that the volume of the cone is 97 cm . Find -when I = 3 and y = 3. dy (3, 3) = Consider a dosed rectangular box with a square base with side I and height y. a. Find an equation for the surface area of the rectangular box. S(=, y) = b. If the surface area of the rectangular box is 64 square feet, find dy -when I = 2 feet and y = 7 feet. dy [2,7) =