Hong hikes at least 1 hour but not more than 4 hours. she hikes at an average rate of 2.7 mph. the function f(t)=2.7tf(t)=2.7t represents the distance she hikes in t hours.

what is the practical range of the function?

all real numbers

all multiples of 2.7 between 2.7 and 10.8, inclusive

all real numbers from 2.7 to 10.8, inclusive

all real numbers from 1 to 4, inclusive

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.

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function. a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

50 points~ ! i have to turn this in tomarrow