What is the completely factored form of
x3 + 4x2 - 9x - 36?
(x + 3)(x - 3)
(x2-9)(x + 4)
(x+3)(x − 3)(x + 4)
(x - 3)(x – 3)(x + 4)
DONE

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

What is the solution of the systems of equations? y=2/3x+3 x=-2

At the olympic games, many events have several rounds of competition. one of these events is the men's 100-meter backstroke. the upper dot plot shows the times (in seconds) of the top 8 finishers in the final round of the 2012 olympics. the lower dot plot shows the times of the same 8 swimmers, but in the semifinal round. which pieces of information can be gathered from these dot plots? (remember that lower swim times are faster.) choose all answers that apply: a: the swimmers had faster times on average in the final round. b: the times in the final round vary noticeably more than the times in the semifinal round. c: none of the above.