An investor bought a number of shares of stock for $1,600. after the price dropped by $10 per share, the investor sold all but 4 of her shares for $1,120. how many shares did she originally buy?

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.

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

What is the sum of the first 8 terms of the geometric series