Witch of the following expression equivalent to 12x + 2

Choices:

A: (12x + 2) x 0
B: (12x + 2) + 1
C: (12x • 0) + (2 • 0)
D: (12x + 2) • 1

Please help I need it for today!

What is the length of bc ? enter your answer in the box.bc =

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.

Ineed with this problem 21 show steps