For two weeks the school librarian recorded the number of library books returned each morning. the data are shown in the dot plot. the librarian found the mean number of books returned each morning. dot plot 0 has 2 dots 1 has 0 dots 2 has 0 dots 3 has 1 dot 4 has 0 dots 5 has 1 dots 6 has 2 dots 7 has 0 dots 8 has 2 dots 9 has 1 dot 10 has 1 dot 11 has 0 dots librarians work 8 + 6 + 10 + 5 + 9 + 8 + 3 + 6 55 = = 6.9 8 8 is this the correct mean of this data set? if not, explain and correct this answer

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

Prism m and pyramid n have the same base area and the same height. cylinder p and prism q have the same height and the same base perimeter. cone z has the same base area as cylinder y, but its height is three times the height of cylinder y. the figures and have the same volume.