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rjkz [21]
1 year ago
14

Stores often mark up items each year to cover inflation. Last year, a CD at Juan’s Tunes cost $12.95. This year, the cost was ma

rked up 8%. The store also gave anyone who bought four CDs this year a 10% discount. Explain the steps to find the final cost for the four CDs this year.
Mathematics
2 answers:
Marina86 [1]1 year ago
8 0
Find the amount the store marked up the CDs by.
12.95 * .08 = 1.034 which rounds to 1.04
Add that to the former price.
12.95 + 1.04 = 13.99
Multiply by 4 to see how many 4 CDs cost.
13.99 * 4 = 55.96
Multiply by .1 to see how much the discount is.
55.96 * .1 = 5.596 which rounds to 5.60
Subtract the discount from the original price.
55.96 - 5.6 = 50.36

It costs $50.36 to buy four CDs this year.
Ratling [72]1 year ago
7 0
4*12.95*1.08-4*12.95*1.08*.10
if u buy 4
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(x - 5)(x + 2)

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1 year ago
Daniel deposited $500 into a savings account and after 8 years, his investment is worth $807.07. The equation A = d(1.005)12t mo
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Answer:

Step-by-step explanation:

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t = 8 years

d = 509

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A = 500(1.005)^96

A = $807.07

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5 0
2 years ago
Amy has two older brothers. Ben is 3 years older than Amy. Chris is 10 years older than Ben. The total of their ages is 73. Form
Alex787 [66]
73-(10+3)=60 you have to add 7 and 3 first, then you subtract it from 73
6 0
2 years ago
Read 2 more answers
PLEASE HELP I HAVE NO IDEA
Agata [3.3K]
Part 1:

The table showing the decreasing debt is shown as follows:

\begin{tabular}&#10;{|c|c|c|c|}&#10;Starting Balance&Interest Accrued&Payment&Closing Balance\\[1ex]&#10;\$1,853.42&\$22.39&\$400&\$1,475.81\\\$1,475.81&\$17.83&\$400&\$1,093.64\\\$1,093.64&\$13.21&\$200&\$906.85\\\$906.85&\$10.96&\$200&\$717.81\\\$717.81&\$8.67&\$200&\$526.48\\\$526.48&\$6.36&\$200&\$332.84\\\$332.84&\$4.02&\$200&\$136.86\\\$136.86&\$1.65&\$138.51&-&#10;\end{tabular}

The column for interest accrued is obtained by the folmular

I=P(1+0.155)^{\frac{1}{12}}

where P is the month's starting balance.



Part 2:

From the table, the last payment is $138.51



Part 3:

The total amount paid by the time the credit card is payed of is the summation of the "payment" column of the table.

Thus, the total amount is given by:

Payment\ total=2(400)+5(200)+138.51=\$1,938.51



Part 4:

The debt ratio is given by

Debt\ ratio= \frac{debt}{limit} = \frac{1,853.42}{3,000} \approx0.62
4 0
1 year ago
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