Practice:
This is the AC method. A is the leading coefficient and C is the constant. The you tube video will give
examples of the AC method (the first videos uses the same arithmetic, but does not use grouping)
Once you identify that you can use (-9) and (-2) to multiply to equal 18, and ADD
to be -11, then you can SUBSTITUTE the -9 and -2 for the -11 in the polynomial.
does this look right? Can you SEE the substitution for the MIDDLE TERM? we
substitute -9x and -2x for -11x because it is EQUAL and will help us GROP by
giving us the CORRECT common FACTORS
6x² - 9x - 2x + 3
Choose

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

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.