Christine earns dollars each week working part-time at a bookstore. She earns one additional dollar for each book that she sells. Let be the amount (in dollars) that Christine earns in a week if she sells books. Write an equation relating to . Then use this equation to find the amount of money Christine earns if she sells books.

The median of any set of numbers is the middle number of the set when then all the numbers are arranged from smallest to greatest. However, if there is an even number of numbers in the set, just take the average of the two numbers close to the middle

The mode of any set is the number that shows up the most often in the set

The mean of any set is all the numbers in the set divided by the number of numbers in the set

The range is the smallest number of the set subtracted from the largest number of the set.

Hope that helped!