Mr. Corona sells magazines part-time. He is paid a monthly commission. He receives 21% of his first $1,500 in sales and 14% of the balance of his sales. Last month he sold $2,233 worth of magazine subscriptions. How much commission did he earn last month?

33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.

Can someone show me step by step how to do this?

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?