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igor_vitrenko [27]
3 years ago
8

Every day, 500 airplanes in San Francisco incur an additional 30 minutes of airport delays when flying into or out of the airpor

t. In Chicago, the delays amount to 15 minutes for 1,200 airplanes. If the price of time is $30/hour in San Francisco and $20/hour in Chicago, which airport incurs the largest opportunity cost?
a. San Franciso
b. Chicago
c. neither
Mathematics
2 answers:
xxTIMURxx [149]3 years ago
7 0
Yes San Francisco is indeed the largest opportunity cost.
rusak2 [61]3 years ago
4 0
A. San Francisco is the largest opportunity cost
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Gina takes classes at both Westside Community College and Pinewood Community College. At Westside, class fees are $98 per credit
Kipish [7]

Answer: second option.

Step-by-step explanation:

Let be "w" the credit hours at Westside Gina is taking.

You know that class fees are $98 per credit hour at Westside, then the expression for the dollar amount she paid for her class fees at Westside is:

98w

Since she is taking a combined total of 13 credit hours at the two schools, the credit hours at Pinewood Gina is taking can be represented by this expression:

13-w

You know that class fees are $115 per credit hour at Pinewood, then the dollar amount she paid for her class fees at Pinewood can be expressed as:

115(13-w)

Therefore, the expression for the combined total dollar amount she paid for her class fees is:

total\ paid=98w+115(13-w)\\\\total\ paid= -17w + 1495

6 0
3 years ago
Read 2 more answers
Plz help with this word problem
s344n2d4d5 [400]
Well, this problem is best solved by setting up a system of two linear equations.

A linear equation can be defined 
y=mx+b
where 
b=initial value (when x=0), and
m=rate of increase or decrease.

In the given example, the x-axis represents hour, and the y-axis, number of cells.

Chemical #1 
initial value = b = 12000 cells
rate = m = -4000 / hr
The equation is therefore 
y1=-4000x+12000......................(1)

Similarly, for chemical #2
initial value = b = 6000 cells
rate = m = -3000 / hr
The equation is therefore
y2=-3000x+6000 .......................(2)

The time the two will have an equal sized colony would represent the solution of the system of equations (1) and (2), i.e. when  y1=y2
which means
-4000x+12000 = -3000x+6000
transpose and solve for x
4000x-3000x = 12000-6000
1000x=6000
x=6 hours.

At 6 hours from the start, 
y=-4000x+12000 = -4000*6+12000 = -24000+12000 = -12000 cells

So the solution is x=6, y=-12000, or (6,-12000)

Physical interpretation
Since cells cannot have a negative number, the two are actually equal before six hours, when they are both zero.
Case 1: y=0 when x=3
Case 2: y=0 when x=2

Therefore, after three hours, both trials will have zero cells.

You have to judge whether to give the mathematical solution (x=6,y=-12000) or the physical interpretation (x=3, y=0) as the answer.


6 0
3 years ago
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How do you write 4540 million in standard form?
vovangra [49]
For this case what we should do is take into account the following conversion:
 million = 10 ^ 6

 We then have the following number:
 4540 million

 Applying the given conversion we have:
 4540 * 10 ^ 6

 By doing the corresponding calculation we have that the standard form is given by:
 4540 * 10 ^ 6 = 4,540,000,000

 Answer:
 
4540 million in standard form is:
 
4,540,000,000
8 0
3 years ago
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If the speed limit on a interstate is 45 and someone is going 85 how much more are they going than the speed limit?
-Dominant- [34]

Answer:

40 miles over the speed limit

Step-by-step explanation:

You want the difference between the two numbers so you subtract 45 from 85 which gives you 40

3 0
3 years ago
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Make the following conversion. 54 km = _____ cm 0.0054 0.00054 54,000,000 5,400,000
just olya [345]
D)5,400,000 Is your answer....
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3 years ago
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