1.) Avery and Sanaa were at track practice. The track is 2/5 kilometers around. Avery ran 1 lap in 2 minutes. Sanaa ran 3 laps in 5 minutes. a. How many minutes does it take Avery to run one kilometer? What about Sanaa?
b. How many kilometers does Avery run in one minute? What about Sanaa?
c. Who is running faster? Explain your reasoning

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered