A child riding a bicycle at 15 m/s accelerates at 3.0 m/s/s for 4.0 s. What is the child's speed at the end of this 4.0 s interval? 12 m/s 12 m/s 27 m/s 27 m/s 3.0 m/s 3.0 m/s 7.0 m/s

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.

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

You are at a restaurant and owe $56.20 for your meal. you want to leave an 18% tip. approximately how much is your tip?