Iodine-131 is a radioactive material with half-life of eight days. a scientist starts with 100 grams of iodinie- 131. which function can be used to estimate the number of grams of iodine-131 remaining at the end of x days? a. f(x)= 100(0.92)^x b. f(x)= 100 (1.09)^x c. f(x)= (0.92)^x d. f(x)= (1.090^x

Ashley recently opened a store that sells only natural ingredients. she wants to advertise her products by distributing bags of samples in her neighborhood. it takes one person 22 minutes to prepare one bag. how many hours will it take to prepare 900900 bags of samples if ashley and 55 of her friends do the work?