The population of city a was approximately 243,000 and it increased by 8% in one year. what was the new population

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?