C8. An exponential graph containing the points (2, 5) and (4, 12) has the equation x/2 x/2 25 12 12 5 d) e) none of these a b) ( 2 3 ) c ) 25 12 4 12 5\fC31. For which value of x does the graph of the function f(x) = e" In x have a horizontal tangent? Round your answer to the nearest hundredth. a) 1 b) 1.76 c) 2.81 d) 3.93 e) NeverC35 If $20,000 per year How's uniformly over a 30 year period and earns 4.5% interest, compounded continuously, then the present value, to the nearest dollar, is a] $5,185 1)) $329,222 :3] $275,384 d) $22,148 :3] $487,139 D14. If the demand equation is given by p=v9-x , then the marginal revenue is 0 when a)x=9 b) x = 2 c) x =6 d) x = 3 e) x = 5\fD29. x=-1/3 =-0.333 is a critical number for f(x) =e* Vx . The critical point (-0.333, -0.497) is a) a relative minimum b) a relative maximum c) neither a relative maximum nor minimum d) a point of inflection e) a saddle point D30. The "best fit" logarithmic function passing through the points (2, 1), (3, 4) and (4, 7), rounded to three decimal places is a) -5.083 + 8.574 In x b) 8.574-5.083 In x c) 3.623 + 2.57 In x d) 2.57 + 3.623 In x e) none of these