-8p^4+12p^3+4p^4-8p^2+3p^2

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)