A student used the following steps to estimate 34% of 104. 1. Round 34% to 30%.

2. Round 104 to 100.

3. 10% of 100 is 10.

4. 10(3) = 30

5. 34% of 104 is about 30.

34% of 104 is closer to 35.

What might have made the estimate this much less than the actual? Check all that apply.
The percent was rounded down.
The percent was rounded up.
The number was rounded down.
The number was rounded up.

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.

Ihonestly have no clue if it's each or none.

Which pair of expressions is equivalent? a 7(1–k)and7–k b 7(1–k)and1–7k c 7(1–k)and7–k d 7(1–k)and7–7k