. . . 6000 . . . . . The demand function for a product Is given twp = where p Is the prIce per unit In dollars when x units are demanded. |n(x + 15} (a) Find the rate of change of price with respect to the number of units sold when 40 units are sold. (Round your answer to the nearest cent.) in: [b] Find the rate of change of price with respect to the number of units sold when 90 units are sold. [Round your answer to the nearest cent.) is: {c} Find the second derivative. we = Is the rate at which the price is changing at 40 units increasing or decreasing? O p'(x} is increasing at 40 units. O p'[x} is decreasing at 40 units. Need Help