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BaLLatris [955]
2 years ago
7

A cable company charges $35 for basic subscription and $4 per premium channel. Write a function rule that represents the money c

ost(c) which is dependent on the number of premium channels(p) HELP
Mathematics
2 answers:
vampirchik [111]2 years ago
5 0

Answer:

c = 4x + 35

Step-by-step explanation:

Imagine c = cost

$35 is base price so you add that to whatever else you spend.

Let x = number of channels you buy. ($4/CHANNEL)

so cost is equal to $4*channels plus 35

Therefore

c = 4x+35

Inga [223]2 years ago
4 0

Answer:

should be

<em>c = 4p + 35</em>

cause you pay 35 as a standard and then you just multiply 4 with the number of extra channels.

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Write an equation of the line passing through point P(−2, 6) that is parallel to the line x=−5.
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Answer:

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An Internet reaction time test asks subjects to click their mouse button as soon as a light flashes on the screen. The light is
Ganezh [65]

Answer:

(a) 0.20

(b) 31%

(c) 2.52 seconds

Step-by-step explanation:

The random variable <em>Y</em> models the amount of time the subject has to wait for the light to flash.

The density curve represents that of an Uniform distribution with parameters <em>a</em> = 1 and <em>b</em> = 5.

So, Y\sim Unif(1,5)

(a)

The area under the density curve is always 1.

The length is 5 units.

Compute the height as follows:

\text{Area under the density curve}=\text{length}\times \text{height}

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Thus, the height of the density curve is 0.20.

(b)

Compute the value of P (Y > 3.75) as follows:

P(Y>3.75)=\int\limits^{5}_{3.75} {\frac{1}{b-a}} \, dy \\\\=\int\limits^{5}_{3.75} {\frac{1}{5-1}} \, dy\\\\=\frac{1}{4}\times [y]^{5}_{3.75}\\\\=\frac{5-3.75}{4}\\\\=0.3125\\\\\approx 0.31

Thus, the light will flash more than 3.75 seconds after the subject clicks "Start" 31% of the times.

(c)

Compute the 38th percentile as follows:

P(Y

Thus, the 38th percentile is 2.52 seconds.

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2 years ago
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