Solve the problem.The formula D = 8e-0.04h can be used to find the number of milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. When the number of milligrams reaches 4, the drug is to be given again. What is the time between injections?
A. 17.33 hrs
B. 51.99 hrs
C. 34.66 hrs
D. 20.47 hrs
Answer: A
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Find an equation for the line tangent to the given curve at the indicated point.y = x2 - 4 at (-2, 0)
A. y = -4x - 12 B. y = -4x - 8 C. y = -2x - 8 D. y = -4x - 16
Find an equation of variation for the given situation.y varies inversely as the square of x, and y = 0.12 when x = 0.6
A. y = 
B. y = 
C. y = 
D. y = .57x2
Solve the problem.Suppose your job is to take phone orders for machine parts. Use the table below to answer the following questions. Write the correct part number that matches what you hear the customer say on the phone. 
"Can you rush me the 5-thousandth centimeter size?"
A. B B. A C. I D. G
Solve the exponential equation. Express the solution set in terms of natural logarithms.?x+1 = e2x
Fill in the blank(s) with the appropriate word(s).