Which equation, when graphed, has x-intercepts at (−1, 0) and (−5, 0) and a y-intercept at (0, −30)? f(x) = −6(x + 1)(x + 5) f(x) = −6(x − 1)(x − 5) f(x) = −5(x + 1)(x + 5) f(x) = −5(x − 1)(x − 5)

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

It says factor each expression completely 8y+48

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.