A company manufactures acoustic guitars. The table shows the number of units that the company sold each month over a nine-month period beginning in January. Month, x 1 2 3 4 5 6 7 8 9
Units, y 150 300 380 425 425 480 520 550 575

Which equation best models the situation?

a y=148.4 x-1-154

b y=46.4x+191.7

c y=148.4 x-1+154

d y= -46.4x+191.7

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

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.

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?