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stira [4]
3 years ago
14

Don't answer if you don't know

Mathematics
1 answer:
SIZIF [17.4K]3 years ago
3 0
0.10d + 0.25q = 3.55
q = d + 3

0.10d + 0.25(d + 3) = 3.55
0.10d + 0.25d + 0.75 = 3.55
0.10d + 0.25d = 3.55 - 0.75
0.35d = 2.80
d = 2.80/0.35
d = 8.....8 dimes

q = d + 3
q = 8 + 3
q = 11 <=== 11 quarters
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C is the correct answer
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Answer:

The interest is equal to \$13$13

we know that

The compound interest formula is equal to

A=P(1+\frac{r}{n})^{nt}A=P(1+

n

r

)

nt

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest in decimal

t is Number of Time Periods

n is the number of times interest is compounded per year

in this problem we have

\begin{gathered}t=3\ years\\ P=\$80\\ r=0.05\\n=1\end{gathered}

t=3 years

P=$80

r=0.05

n=1

substitute in the formula above

A=\$80(1+\frac{0.05}{1})^{3}=\$92.61A=$80(1+

1

0.05

)

3

=$92.61

Find the interest

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Round to the nearest whole dollar

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