Which graph represents the piecewise-defined function? y=⎧⎩⎨⎪⎪−4   if  x≤−30   if  x=23    if  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.

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

What is fraction that is equivalent to 3/8