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ANTONII [103]
2 years ago
7

Clive has a phone plan where he pays double his base per minute rate for any additional minute spent on a call over twenty minut

es.
Determine and define the variables needed to model the situation
Mathematics
1 answer:
Sidana [21]2 years ago
6 0

The two variables that we should use are:

  • x = number of minutes that the call lasted.
  • y = cost of that call.
<h3>What variables should we use?</h3>

Here we want to study a relation between the cost per call as the function of the minutes that the call lasted.

So, we need to use two variables, x will be the number of minutes that call lasted, this is the independent variable.

And the variable that depends on that should be the cost of the call, let's say, y is the cost of the call.

These are the two variables that we need to model the situation:

y = f(x)

There says:

<em>"The cost of the call is a </em><em>function </em><em>of the number of minutes that the call lasted".</em>

<em />

If you want to learn more about functions, you can read:

<em>brainly.com/question/4025726</em>

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nlexa [21]

Answer:

$920.86 is rounded to $900

Step-by-step explanation:

The 9 is the hundred place, the 2 is the ten place, the 0 is the ones place, 8 is the tenth, 6 is the hundredth.

So nine-hundred and twenty is rounded to 900.

This is because any number that is 5 or below stays the same, so if the 920 is instead 960, you would round the answer to 1000.

So, 920.86 is rounded to 900.

8 0
3 years ago
Alec paid the bill for dinner with his clients which totaled $140 before tax and tip. If an 8 percent sales tax was added to the
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Answer:

176.2

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3 years ago
Solve: |2x + 3| -1 &lt; 4
dybincka [34]
|2x+3|-1<4
|2x+3|<5

1) when 2x +3 is positive     
2x+3<5
2x<2
x<1    (-∞, 1)

2) when 2x+3 is negative
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(-∞, 1)∩(-4, ∞)=(-4,1)



7 0
3 years ago
Read 2 more answers
Tamara bought a $22 mailbox using a 10% off coupon David bought an identical mailbox for $19.95 at a different store
MAVERICK [17]

Answer:David bought an identical mailbox for $ 19.95 at a different store.

Step-by-step explanation:

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4 0
2 years ago
After spending $30 on a dress, Mary had 3/8 of her money left. How much money did she have at first?
BaLLatris [955]
The answer is that she had 48.  Set it up as an equation with x as the amount of money she started with.  x - 30 = 3/8x.  That says, in words, "the amount of money she started with minus 30 for the dress left her with 3/8 of the money she started with.  Solve for x by adding 30 to both sides and subtracting 3/8 from 8/8x (8/8 = 1).  8/8 - 3/8 = 5/8, so 5/8x = 30, multiply both sides by 8 to get 5x=240 and x = 48.
3 0
4 years ago
Read 2 more answers
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