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Pani-rosa [81]
2 years ago
14

Don’t know how to solve.

Mathematics
1 answer:
iVinArrow [24]2 years ago
3 0

Answer:

$122.88

Step-by-step explanation:

the phone decreases by 20% each year , that is

(100 - 20)% = 80% = \frac{80}{100} = 0.8

the phone reduces by a factor of 0.8 each year , then after 4 years

value = $300 × (0.8)^{4} = $122.88

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Orlov [11]
Rewrite equation so that it is homogeneous . 
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Solve characteristic equation:
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The solutions to the homogeneous equation are:
y = k_1 e^{r_1 t} + k_2 e^{r_2 t}

Finally you need the constant term in "cy" to equal 'd' to satisfy the particular solution.
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4 0
3 years ago
Solve the inequality 5(2x + 1) &lt; 10.<br> х&lt; 1/2<br> x&gt; 1/2<br> х&lt; 3/2<br> x&gt; 3/2
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Answer:

x < 1/2

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4 0
3 years ago
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The engine torque y (in foot-pounds) of one model of car is given by y=−3.75x2+23.2x+38.8, where x is the speed (in thousands of
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Answer:

Step-by-step explanation:

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3 years ago
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Zolol [24]

Answer:

B

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Those two added together are equal to
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