If f(x) = 2x – 6 and g(x) = 3x + 9, find (f + g)(x). a. (f + g)(x) = 5x + 15 b. (f + g)(x) = 5x + 3 c. (f + g)(x) = x + 15 d. (f + g)(x) = –x – 15

The solution set for 5v2 – 125 = 0 is

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.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%