can't do math for the life of me. HELP.

alihaq717
Tue, 22 Jun 2010 16:07:35 +0000

For the first one just plug in 2 for x and that eliminates choices b and d (because from the equation the answer is 0. Plugging in 2 in the formulas provided by b and d do not produce 0 as the answer). Then plug in 0 for x and that eliminates choices a and c (because plugging in 0 gets you 2 as the answer, but when you plug it into the formulas in a and c you get the wrong answer), leaving choice e as your answer.

For the second one start off with 25. Then subtract 10 because we are only looking for 6/7/8 rooms. Then subtract 4 because there are 4 that have more than 8 rooms. This leaves you with 11 (25 - 14).

For the last question I actually remember doing it on the actual test: all I did was draw the lines and count the spaces. It doesn’t take as long as you would think, and I got it right. I can’t recall the answer right now. But there is probably a faster way.