< Exit 5-3: MathXL
Assignment is past due (04/16/21 11:5
5.3.PS-16
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Challenge A cell phone plan costs $26.90 per month for 400 minutes of talk time. It costs an additional
$0.05 per minute for each minute over 400 minutes. To get e-mail access, it costs 20% of the price for 41
minutes of talk time. Your bill, which includes e-mail, is the same each month for 7 months. The total cos
for all 7 months is $257.46. Write and solve an equation to find the number of minutes of talk time you us
each month.
Let m represent the number of minutes over 400 minutes each month. Which equation represents the
given situation?

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.