The table below represents the equation y= 500(1-0.052)^x , which represents the amount of a drug left in a patient's bloodstream over time. The y -values represent time in hours, and -values represent the amount of the drug left in milligrams. Part A: What is the initial dosage of the drug in milligrams?

Part B: How much of the drug has been eliminated after 4 hours? Show your work.

Part C: Find the amount of the drug left in the patient's system after 24 hours.

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.