What is the coefficient of x in the expression?

6x + 9y + 15z
A) 3
B) 6
C) 9
D) 15

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 are the domain and range of the function f(x)=2^x+1

Find the value of x in each case. give reasons to justify your solutions! d q ∈ pr