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Q6b-6 point   Solve the problem.After an injection, the amount of a medication A in the bloodstream decreases with time t, in hours. Suppose that under certain conditions A is given by

Q16c-5 point    Find the elasticity. 

Q14c-3 point   Provide the proper response.Give an example of a function for which the first derivative and the second derivative are both always positive.

Q17b-10 point   Solve the problem.

Q4a (5 pts) Find                                                                                                                                                                           

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

Q12c-5 point   Solve the problem.From a thin piece of cardboard 40 in. by 40 in., square corners are cut out so that the sides can be folded up to make a box. What dimensions will yield a box of maximum volume? What is the maximum volume? Round to the nearest tenth, if necessary.

Q9a  (10 pts) Solve the problem.Of an initial amount of 8000 gram of lead-210, how much will remain in 190 years? lead-210 decayes at a rate of 3.15%. ( Round your answer to the nearest one decimal place as needed)                                                                                                                                                                                                                                                          

Q12a (5 pts) Solve the problem. Find the function D that satisfies , given that D=20 when t=0.                                                                                                                                                                                                                    

Q8a-5 point   Determine a rational function that meets the given conditions, and sketch its graph. The function f has a vertical asymptote at x = -3, a horizontal asymptote at y = 2, and f(0) = 1.