Christina would like to give her brother new glass for his birthday she has lots of coupons but is not sure which one to use her first coupon is for 50% off the original price of one item normally she would use this coupon however there is a promotion this week and gloves are selling for 35% off the original price she has a coupon for an additional 20% off sale price of any item which coupon will give her the lower price she’s not allowed to combined the 50% off coupon with the 20% off coupon

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