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Nature of Math test 2
note cards for the test number 2 of ed johnson's class
42
Mathematics
Undergraduate 2
11/02/2009

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Term
inflation
Definition
a rise in general level of prices of goods and services in an economy over time
Term
percentage increase
Definition
average price of goods, use inflation price in compound interest
Term
inflation/percetage calculation
Definition
original price(1+rate of increase) ^ time
Term
population model
Definition
use continuous compounding Pe^rate X time
Term
tax free
Definition
no taxes charged on gains
Term
tax free example
Definition
munibonds - bonds issued by the local government and 529's which are bonds issued for education
Term
tax deferred
Definition
401 k, IRA, retirement accounts
Term
taxable investment
Definition
money to invest times 1+ APR to the number of years
Term
savings plans
Definition
pmt times (1+ (r/n))^nt - 1 divided by (r/n) OR pmt ((1+(r/n)^nt -1)n all divided by r
Term
IRA
Definition
Individual retirement Account an account you can put money into up to 5000 a year tax free
Term
America has what kind of tax system
Definition
regressive tax system
Term
why do higher incomes pay higher tax rates
Definition
income redistribution
Term
flat tax
Definition
same rate tax for all incomes
Term
regressive tax system
Definition
higher tax rates = lower income trickle down economics
Term
progressive tax system
Definition
higher incomes pay higher tax rates
Term
import and export tariffs
Definition
taxes on items that cross the border
Term
state taxes
Definition
also known as inheritance tax or death tax - tax on peoples property after they die
Term
personal property tax
Definition
big luxury items like a boat or expensive car
Term
real property tax
Definition
realty
Term
income tax
Definition
taxes on personal income
Term
sales tax
Definition
tax on goods at point of sale
Term
property tax
Definition
tax on property or land owned
Term
value added tax
Definition
tax on increased value of goods at each point of manufacture
Term
percentages
Definition
a ratio/ part to a whole usually adding up to 100%
Term
off vs of
Definition
100% an item is 70% off meaning you pay 30% of
Term
real property
Definition
land or perminent structures built on that land
Term
fixed rate loan
Definition
terms commonly 30, 20, or 15 years. fixed payments per month
Term
adjustable rate mortgage
Definition
rate can adjust to current market rate at predetermined intervals. all 30 years unless otherwise noted are up for ARM every 2 years. usually there is an adjustment cap at about 5.5%
Term
balloon mortgage
Definition
not a rate change but you start out with a low payment and eventually start paying huge payments. Usually these are for individuals with jobs that will potentially get them more money down the road. Doctors generally have these.
Term
subprime loan
Definition
for individuals with sub-par credit (below average)
Term
interest
Definition
the charge for the privilege of borrowing money typically expressed as an annual percentage rate
Term
principal
Definition
the money being borrowed
Term
term
Definition
a pre-agreed upon time that the money will be borrowed
Term
simple interest
Definition
interest that is charged only once over the lifetime of a loan
Term
simple interest formula
Definition
I=prt interest equals principal times the rate times the time
Term
compound interest
Definition
interest paid on the principal plus any previously accrued interest A=P(1+r/n)^nt which means accumulation equals the principal times 1 plus the rate over the amount time to the amount of time times the years
Term
continuous compounding
Definition
A=Pe^rt
Term
monthly compounding
Definition
A=P(1+r/n)^nt
Term
APY
Definition
Annual Percentage Yield a way to compare different investments
Term
Absolute difference
Definition
a subtraction
Term
relative difference
Definition
a ratio
Term
compared value
Definition
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