So, we just took our exams on chapter 5 which dealt with logs and interest, and a few more formulas. I thought I understood the information, but apparently not. I just finished the 14 aleks modules that we needed done by today, and then tommorrow i will start on the 50 modules for extra credit.
So, now i will just review different stuff throughout chapter 5.
Rule of 72
72/r%=how long it takes to double
How long will it take to double your money at a 12% interest?
72/12=6
We learned a formula for interest:
A(t)=Ao b^t/k
Ex. A bank advertises that if you open a savings account, you can double your money in twelve years. Find out how much money you will have after 7 years, if you invest $1,000 into your account.
A(t)=1000(2)^7/12=$1498.31
I'm very happy to get out of chapter 5, hopefully i will understood the information better in the 4th nine weeks, because that will probably be the toughest part of the year in math.
No comments:
Post a Comment