Dr. Dan; I wanted to tell you how much you've helped me in this lesson and other lesson's you've taught. I believe I've got the rate of increase down now👍😊. My example to you is: if my monthly income is $750.00, and I'm getting a 2.8 increase before long, my new income would be with 2.8 increase would be $771.00, I didn't know how to figure this out correctly before I watched this video!, I went through 11th. Grade and dropped out, I was passed by teachers in school, I was shy, and from a broken horrible home life. I recently Got my G.E.D. after going to night school 2&1/2 years, 👍😃 thank you!! Thank you!!, my mom was told I'm unteachable!, but multiple I.Q. tests over year's revealed I was above average in intelligence my mother told me, ( they said Albert Einstein was unteachable, not smart etc.., although I'm not comparing my mind with intellect of Mr. Einstein, I'm a humble guy! ) I know I can learn!! And have, and continue to learn math,and I enjoy math now as before I hated it and dreaded any math. THANK YOU AGAIN Dear Sir; sincerely Dave D. 😊
I am replying to a question raised by one of the series followers ... "i am sorry, but in 14:2, julia's example, i had a different answers. please correct me if i am wrong. So, first, i fournd out what was is 8% of 28000, and then i got 2240. Then i subtracted the 2240. My comments: Calculating he percent of increase / decrease is dependent on the ORIGINAL amount. The formula is - percent increase = (new amount - initial amount) * 100/initial amount the multiplication by 100 is to change the number from fractional form to percent format. Then using the formula - (using f to represent the unknown original salary) 8% = (28000 - f)*100/f dividing both sides by 100 gives me .08 = (28000 - f)/f multiplying both sides by f gives me .08f = 28000 - f adding an f to both sides f + .08f = 28000 factoring out the f gives (1 + .08)f = 28000 = 1.08f = 28000 dividing both sides by 1.08 gives f = $25,926 I think here the point to remember is the the percent increase / decrease is defined as being based upon the original amount, not the updated amount.
P.S. I forgot to include $750.00 month salary with a 2.8 increase would be a $21.00 increase! A month, sorry, I didn't explain myself better in my first statement sir. $750.00/month/ 2.8 increase resulting in $21.00 increase a month,/$750.00 to $771.00.
Thanks for your help, however I was looking for a few test exercise at the end of each sessions to assess my understanding. Merry Christmas and look for to your support 2018
Hi Phillipa, I appreciate your comments. First I would like to compliment you on realizing that you can't learn math just by watching videos or reading through a text. Like getting good at playing a musical instrument, you must practice. I did the videos as part of a distance education course I taught a number of years ago. It was based roughly on the textbook I was using at the time. The homework problems were taken from that. Unfortunately, I don't remember which one it was. But you might give these websites a look. They have PDF prealgebra texts that you can use online or download. The problems you find there for a particular topic will work for review. I found these in a quick Google search. There are probably more. Mrs. Mulligan's Web Page - sites.google.com/a/corvallis.k12.or.us/mrs-mulligan-s-web-page/pre-algebra-book-pdf Math 376 Prealgebra Textbook - College of the Redwoods msenux2.redwoods.edu/PreAlgText/Prealgebra.pdf I wish you success in your math studies. Dan
