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Morgarella [4.7K]
3 years ago
5

Which exponential function, after being reflected over the x-axis, has a y-intercept at (0, −4) and the right side of the graph

approaches y = 0?
A) y = 4(2)x
B) y = 4(1/2)x
C) y = −4(2)x
D) y = −4(1/2)x
Mathematics
2 answers:
solong [7]3 years ago
8 0

Answer:

C

Step-by-step explanation:

prohojiy [21]3 years ago
7 0

Answer:

Step-by-step explanation:

I don’t know the answer that’s why I brought it here

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126.4 cm

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Can you please help with this question about exponential equations?
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Since t represents the number of years passed since 2005, in 2005 we have t=0, and in 2015 we have t=10. Let P_J(y),P_D(y) represent the profits of Jones and Davis, respectively, at year y.

We have

P_J(2005) = 10(0.99)^0 = 10,\quad P_J(2015) = 10(0.99)^{10}\approx 9

P_D(2005) = 8(1.01)^0 = 8,\quad P_D(2015) = 8(1.01)^{10}\approx 9

Choosing the best company somehow depends on how much time you can wait: Jones start with a higher value (10 vs 8), but it has a descending trend, because the multiplicative factor 0.99^t goes to zero as t grows.

On the other hand, Davis starts with a smaller value, but 1.01^t tends to infinity as t grows.

So, if you need an immediate result, the most valuable company is Jones, otherwise you're certain can Davis will eventually become bigger.

More precisely, we have

8\cdot 1.01^t = 10\cdot 0.99^t \iff 0.8 = \left(\dfrac{0.99}{1.01}\right)^t \iff t\approx 11

So, after 11 years, Davis will overcome Jones.

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What is the slope ofthe line -4, 5 and -8, -5
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Step-by-step explanation:


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