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spayn [35]
3 years ago
5

The cost, C dollars, of hiring a taxi is given by the formula C=2.00+3/20n, where n is the number of tenths of a mile driven. Wh

at is the cost if the taxi is hired to drive 4.0 miles?
Mathematics
1 answer:
Snezhnost [94]3 years ago
4 0

C(n)=2.00+3.20n

If n = 4 miles:

C(4)=2+3.20(4)

C(4)=2+12.80

C(4)=14.80

The cost of the taxi is $14.80.

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3. (05.06 MC)
AveGali [126]

Answer:

Step-by-step explanation:

y > 3x + 10

y < -3x - 1

<h3> Part A:</h3>

You'd graph the given systems of linear inequalities the same way as you graph the linear equations.  

To graph y > 3x + 10, plot the y-intercept, (0, 10), then use the slope, m = 3 (rise 3, run 1), to plot other points on the graph.  Use a dashed line (because of the ">" symbol).  

Follow the same steps for the other linear inequality. Plot the y-intercept, (0, -1), then use the slope, m = -3 (down 3, run 1) to plot other points. Use a dashed line (because of the "<" symbol).  

Pick a test point on either side of the boundary line and plug it into the original problem.  This will help determine which side of the boundary line is the solution.  Plug in a test point that is not on the boundary line.

Use the point of origin, (0, 0) as the test point. Plug in these values into the given systems of linear inequalities to see whether it will provide a true statement.  

y > 3x + 10

0 > 3(0) + 10

0 > 0 + 10

0 > 10 (False statement).  

y < -3x - 1

0 < -3(0) - 1

0 < 0 - 1

0 < -1 (false statement).  

Since the point of origin provided a false statement to the given systems of linear inequalities, you must shade the half-plane region where it doesn't contain the test point.  

<h3>Part B: </h3>

You'll do the same process as what I've done for the test point. Plug in the values of (8, 10) into the given systems of linear inequalities. If it provides a false statement, then it means that it is not a solution to the system.  

y > 3x + 10

10 > 3(8) + 10

10 > 24 + 10

10 > 34 (False statement).  

y < -3x - 1  

10 < -3(8) - 1

10 < -24 - 1

10 < -25 (false statement).  

Therefore, (8, 10) is not a solution to the system.    

8 0
2 years ago
The complement of a right angle is an obtuse angle.
harkovskaia [24]
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yw brodie
4 0
3 years ago
When purchased, a plastic beach ball is deflated and packaged flat. The package states that when inflated to its maximum capacit
Zigmanuir [339]
So  the formula for a volume of a sphere is 4/3 times pi times the radius cubed.
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6 0
3 years ago
Can someone give me the answer for this one
Mrac [35]
The answer is C.

Hope that helps you.
6 0
3 years ago
This is because i dont feel like doing myself​
il63 [147K]

Answer:

231.12

Step-by-step explanation:

540+7% tax is 577.80

7 0
3 years ago
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