horace’s speedometer reada 60 miles per hour, but during a road test he finds that he was actually driving 58 mph. what is the percent error in horace’s speedometer?

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?

Shannon drove for 540 minutes. if she traveled 65 miles per hour,how many total miles did she travel?

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