1. [6 points] Differentiate the function y = In[(3r + 4)(713 -5)] 64r - 25x- - 15 84r + 84r- - 15 36r - 84r- - 15r (A) (3r + 4) (713 - 5) (B) (3r + 4) (713 -5) (C) (3r +4) (713 - 5) (D) None of above 2. [6 points] Differentiate the function y = 316e-2 (A) 18re-2 - 6re-2x (B) fire-2 -2re-"x (C) 18re - free * (D) None of above 3. [6 points] Find the point elasticity of the equation q = 20 - ap for the indicated values q = 5. Also determine whether demand is elastic, inelastic, or unit elastic. [Note: here 'q' represents quantity and 'p' represents price.] (A) -3. inelastic (B) -12, elastic (C) -1, unit elastic (D) None of above 4. [8 points] Use implicit differentiation to find 24 where 3r' + 9ry' = 5rly 15x-y - 912 - 9y- 212 - 3y- 15x-y - 912 - 9y (A) -513 - 18ry (B) (C) 9r - 513 (D) None of above