Jina borrowed $8000 at a rate of 18%, compounded semiannually. Assuming she makes no payments, how much will she owe after 5 years?

$18,938.90

Step-by-step explanation:

The formula for compound interest is A=P(a+r/n)^n(t)

A= final amount

P= original amount

r= interest rate

n = number of times interest is compounded

t= time

so in this case your formula will look like A= 8000(1+.18/2)^2(5)

your n amount is 2 because you are compounding semi annually so twice a year and your t is 5 because you are looking for the amount after 5 years. Therefore A = 18938.9

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

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