Mrs. lozano is choosing carpet for her family room. which of the following must mrs. lozano know to find out how much carpet she needs? a. the cost of one square yard of carpeting b. the perimeter of the family room floor c. the area of the family room floor d. the height of the family room

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