Q16b-5 point     Find the elasticity.  

Q8b  ( 5 points)   Find the average value of the following function over the given interval.;                                                                                                                                                           Ans:

Q17a-10 point   Solve the problem.

Q2a  ( 5 points)   Solve the problem.An object’s acceleration at time is given by  

Q14a-3 point   Provide the proper response.Give an example of a function for which the first derivative and the second derivative are both always negative.

Q15c  (7 pts) Mary’s Taxi Services purchases a sedan and estimates that its salvage value V(t), in dollars, after t years, is given by         V(t)= 32,500e-0.13t a) What did the sedan cost originally? b) What is the salvage value after 4 years? c) Find the rate of change of the salvage value after 4 years, and explain its meaning.    ( Round all your answers to the nearest whole number)                                                  

Q5b-3 point   Draw a graph on the paper to match the description. f(x) has a positive derivative over (-∞, -5) and a negative derivative over (-5, 4) and (4, ∞), and a derivative equal to 0 at x = 4.

Q2b-6 point   Solve the problem.For a dosage of x cubic centimeters (cc) of a certain drug, assume that the resulting blood pressure B is approximated by

Q9b (10 pts) Solve the problem.Of an initial amount of 2000 gram of lead-210, how much will remain in 140 years? lead-210 decayes at a rate of 3.15%. ( Round your answer to the nearest one decimal place as needed)                                                                                                                                                                                                                                                            

Q10a-6 point   Find the points of inflection. Determine where the given function is concave up and where it is concave down.