Compounds A and B are used in an experiment. The equation y=500(0.5)x represents the remaining amount of compound A, in grams, after x hours. The table shows the remaining amount of compound B. Time (h) Grams of B 1 200 2 100 3 50 What is the positive difference in the initial amount of each compound? Enter your answer in the box.

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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.

Glenda makes an online purchase for picture frames for $12.95 each and formats of $5.89 each the site says it taxes paid by the customer or 6.5% of the total purchase price shipping charges are based on the