Which of the following points lie in the solution set to the following system of inequalities? y ≤ x − 5 y ≥ −x − 4 a. (−5, 2) b. (5, −2) c. (−5, −2) d. (5, 2)

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9

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.

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?