I recently have taken the 2007 B releases and I can not find any solutions for the following problems:
13. Let f(x) = |x^2 - x| Find the sum of the critical points of the function. (answer: 1 1/2)
*and how do you find the critical points of a function, in general.
26. Megan Mony put $500 in a special account which earned 15% the first year, 50% the second year, and 40% the third year. What is Megan's average rate of return? (nearest whole %) ( answer: 37%)
*seems simple enough, but I am missing something obviously
36. Find the area of the quadrilateral. (picture given ) (answer: 31.5)
EDIT: Well I found out you could find the area of the big rectangle surrounding the figure and subtract the adjacent triangles. But is there an easier way to solve this?
That is all for now, I will be taking a few more tests this week as well, and will more than likely have some more questions for everyone :-D.
Thank you.