Diane and Darryl both work in sales. Diane gets paid a base salary of $200 per week and $10 per hour. Darryl gets paid a base salary of $250. a) How much does Diane earn if she works 20 hours in one week?

b) If Darryl earns the same total (your answer in part a) in 20 hours, how much does he earn per hour?

Lorenzo ate 2/5 of his bag of almonds. his 4 friends ate equal shares of the remaining bag of almonds?

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

How do you write something in scientific notation?