Which inequality best models the situation if variable h is the number of hours miguel could practice the piano each week? miguel's goal is to practice the piano more than
3 1/2 hours a week. show the possible number of hours he might practice.
a. h > 3 1/2 and h may be a negative number
b. h > 3 1/2 and h must be a positive number
c. h < 3 1/2 and h may be a negative number
d. h < 3 1/2 and h must be a positive number
me

What is the value of x? enter your answer in the box. photo attached.

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.

Bring the fraction a/a-4 to a denominator of 16-a^2