The equation yˆ=−5.131x 2+31.821x−3.333 approximates the number of people standing in line to catch a commuter train x hours after 5 a. m.what is the best estimate for the number of people in line at 7 a. m.? 23 27 32 40

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

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.

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?