The concession stand has 500 pom-poms before the game. The fans bought them at a rate of 20 per minute. Which function can be used to identify how long will it take for the supply to be gone? Group of answer choices y = -25t - 500 y = 500t - 25 y = 25t + 500 y = -25t + 500

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