Ayuda por favor
Escribe una matriz B = (bij)2x13
donde bijF(-1)i+j (21 +j)​

Which of these tables represents a non-linear function?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

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.