Need help with my practice review. Thanks
1.If inflation is 6% a year compounded annually, what will it cost in 21 years to buy a house currently valued at $230,000? Round to the nearest cent.
2.A small company borrows $50,000 at 11% compounded monthly. The loan is due in 4 years. How much interest will the company pay? Round to the nearest cent.
3.By switching service providers, a family's telephone bill decreased from about $50 a month to about $47. What was the percent of decrease?
4.A child's dose of medicine is 1/6 of a pre-measured dose cup. If the bottle of medicine is the size of 9 dose cups, how many children's doses are there in the bottle?
5.Find the best buy.
Brand X: 16 oz for $6.08
Brand Y: 12 oz for $4.32
A)Brand X
B)Equal value
C)Not enough information
D)Brand Y
3 answers
Amount of loan in 4 years
= 50000(1 + .11/12)^48
= ...
to find the interest charged subtract 50000 from the above result (I don't have a calculator handy)
How about letting me know what you have done so far for the rest.
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