Applied Calculus Homework Help----Please, check my work. Are the questions right

Question

Applied Calculus Homework Help----Please, check my work.

Are the questions right???

The coroner arrives at the scene of a murder .it 11 p.m. She takes the temperature of the body and finds it to be 872 degree C. She waits 1 hour, takes the temperature again, and finds it to be 85.1 degree C She notes that the room temperature is C When was the murder committed? A) 9 p.m. b) 8 p.m. c) 6 p.m. d) 7 p.m. Differentiate. f(x) = 4 - e^-x A) -e^-x B) 4 - e^-x C) 4 + e^-x D) e^-x Determine whether the statement is true or false. If demand is elastic for a particular value of p, an increase in price will bring an increase in revenue. A) True (B) False Solve the problem. Find the general form of the function that satisfies the equation dN/dt = kN. A) t = ce^kN B) N(t) = ce^kt C) N = ce^kx D) k = e^tc Differentiate. y = 23^x - 1 23^x - 1(In 23) B) 23^x - 1(In 23^x - 1) C) 23 In 23 D)23^x - 1(In x)

Explanation / Answer

All are right.answer of 1 is D.

Using the result that decay in temperature is depend on the temperature difference.if the temperature difference is high then rate is also high.

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