Let R be the region bounded by the graph of y = , the line x = 4, and the x-axis. Calculate the volume of the solid generated when region R is rotated about the x-axis. No calculator.

Situation: . find the substance's half-life, in days. round your answer to the nearest tenth. a 11 gram sample of a substance that's used to treat thyroid disorders has a k. value of 0.1247. enter the correct answer n - noekt done no - initial mass (at time t = 0) n - mass at timet k a positive constant that depends on the substance itself and on the units used to measure time t= time, in days