Soon after taking an aspirin, a paitent has absorbed 300 milligrams of the drug. If the amount of aspirin in the bloodstream decays exponentially with half being removed every 2 hours, find to the nearest 0.1 hour, the time it will take for the amount of aspirin in the bloodstream to decrease to 200milligrams.​

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.