Can someone help me with question 19,21 and 23.<br><br> I will mark brainleast

You like to watch movies at the local theater. You have two payment options. Your first option is to buy a discount card which w

castortr0y [4]

DO NOT CLICK THE LINK !!!

5 0

3 years ago

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Write a linear cost function for the situation. Identify all variables used. A parking garage charges 4 dollars plus 65 cents pe

Liono4ka [1.6K]

Answer:

The linear cost function is $C(x)=1.3x+4$ dollar.

Step-by-step explanation:

Given : A parking garage charges 4 dollars plus 65 cents per half-hour. A linear cost function for the situation is C(x)=L.

To find : Write a linear cost function for the situation ?

Solution :

Cost function is defined as sum of marginal cost and fixed cost.

Let x be the number of hours i.e. time for which parking cost.

A parking garage charges 4 dollars plus 65 cents per half-hour.

The fixed price is $4.

Marginal cost is 65 cents per half-hour.

Converting cents into dollar,

1 cent = 0.01 dollar

65 cent = 0.65 dollar

The cost of $\frac{1}{2}$ hour = $0.65

The cost of x hours = $0.65\times 2x$

So, marginal cost is $1.3x.

Cost function is defined as

$C(x)=MC+FC$

$C(x)=1.3x+4$

$C(x)=1.3x+4$ dollar.

Therefore, The linear cost function is $C(x)=1.3x+4$ dollar where x is the number of hours.

6 0

3 years ago

In 19951995, there were 41 comma 43141,431 shopping centers in a certain country. in 20052005, there were 48 comma 72948,729.

Natali5045456 [20]

The first thing you should do for this case is to use the following table to perform the equation of a line:
y x
41,431 1995
48,729 2005
We have then that the line that best fits this data is
y = 729.8x - 1E + 06
Then, to know in what year the number of shopping centers reaches 80,000 we must replace this number in the equation of the line and clear x:
80000 = 729.8x - 1E + 06
Clearing x
x = (80000 + 1E + 06) / (729.8) = 1479.857495
nearest whole number
1480
This means that after 1480 years, 80000 shopping centers are reached.
Equivalently, this amount is reached in the year:
1480 + 1995 = 3475
In the year 3475
answer
(a) y = 729.8x - 1E + 06
(b) In the year 3475

6 0

3 years ago

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he lifespan of the Ebola virus on flat dry surfaces has a normal distribution with μ = 643.6 minutes and σ = 77.7 minutes. You m

Vedmedyk [2.9K]

Answer:

By the Central Limit theorem, the mean of the distribution of sample means is 643.6 minutes.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation $s = \frac{\sigma}{\sqrt{n}}$ .