UPDATES

On page: http://dm.mcoe.org/problems/algebra1/video_pages/a-16_0-prob1.html
This text: A potential investor has $28,000 to put into bonds offering an annual interest rate of 6% of a certificate of deposit that offers a rate of 5.5%. The investor would like to earn $1,630 in interest for one year. How much money should the investor put in bonds?

Should be replaced with this text: Which graph shows the position of an elevator in a 3 story tall building over a period of time?