Janine spend $55 at the bookstore. She bought 2 books for a total of $10 and 4 books for a total of $25. How many additional books did she buy if her average cost was $5 per book?

a: 17

b: 2

c: 5

d: 11

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?