Olivia Thoms sells surplus books to bookstores. She is paid a commission of $1.50 each on the first 50 books she sells, $1.75 each on the next 100 books, and $2 on any books she sells over 150. Last week she sold 225 books. What was her commission for the week?

At a small store, a customer enters the front door on average every 8 minutes. a prior study indicated that the time between customers entering the front door during weekdays follows an exponential distribution. what is the probability that the time between customers entering the store on a weekday will be less than or equal to 7? select one: a. 62 b. 43 c. 1/8 d. 7/8 e. 58

Google started as one of many internet search engines, amazon started as an online book seller, and ebay began as a site where people could sell used personal items in auctions. these firms have grown to be so large and dominant that they are facing antitrust scrutiny from competition regulators in the us and elsewhere. did these online giants grow by fairly beating competition, or did they use unfair advantages? are there any clouds on the horizon for these firms -- could they face diseconomies of scale or diseconomies of scope as they continue to grow? if so, what factors may limit their continued growth?

In january, knox company requisitions raw materials for production as follows: job 1 $915, job 2 $1,590, job 3 $771, and general factory use $704. during january, time tickets show that the factory labor of $6,300 was used as follows: job 1 $2,344, job 2 $1,711, job 3 $1,554, and general factory use $691. prepare the job cost sheets for each of the three jobs.