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sladkih [1.3K]
3 years ago
12

Keisha wants to buy a stereo. Her mother said if Keisha saved 75% of the cost of the stereo, she would pay the other 25% and the

taxes. If the cost of the stereo is $150.00, how much money does Keisha need to save?
Keisha needs to save $________???

HURRY PLS
Mathematics
1 answer:
TEA [102]3 years ago
8 0

Answer:

$112.50

Step-by-step explanation:

25% is $37.50

37.50x3=112.50

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For each hour he babysits, Anderson earns $1 more than half of Carey’s hourly rate. Anderson earns $6 per hour. Which equation c
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1/4 + 2/8 <br>adding fractions with unlike denominators show the work
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If f(x)f(x) is an exponential function where f(1.5)=5f(1.5)=5 and f(7.5)=79f(7.5)=79, then find the value of f(3)f(3), to the ne
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Step-by-step explanation:

Given

f(x) is an exponential function. Suppose f(x) is ae^{bx}

f(1.5)=5\ \text{and}\ f(7.5)=79

\Rightarrow 5=ae^{1.5b}\\\Rightarrow \ln 5=\ln a-1.5b\quad \ldots(i)

Similarly,

\Rightarrow 79=ae^{7.5b}\\\Rightarrow \ln(79)=\ln a+7.5b\quad \ldots(ii)

Subtract (i) and (ii)

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\Rightarrow f(x)=3.16e^{0.3066b}

\Rightarrow f(3)=3.16e^{0.3066\times 3}\\\Rightarrow f(3)=7.927\approx 7.93

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