Plz hlp wll give 50 ptsmax was keeping track of the water levels in at the local reservoir. in four days he had the following measurements , 4.5 in., -3 /8in, -2.75 in. and 6/7 in. he wants to know the average water level of the last 4 days.

Simplify.7x + 3y - 2 + 6x + 1 + y squared 2 you! ; )

Marya wants to factor the polynomial 36x^3 -22x^2 - 144x.which term can she add to the polynomial that would not change its grestest common factor? check all that apply

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.