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WARRIOR [948]
3 years ago
12

A cellular telephone company charges 0.30 per minute or fraction thereof. If, Miguel, a customer of this company, talks on his c

ell phone for 23.47 minutes, what’s will his charges be for that phone call?

Mathematics
1 answer:
Stella [2.4K]3 years ago
8 0
____________________________________

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Solve h(x)=x^2-2x-8>7
PIT_PIT [208]

Answer:

x < -3 and x > 5

Step-by-step explanation:

x² - 2x - 8 > 7

~Rewrite in standard form

x² - 2x - 15 > 0

~Factor

(x + 3)(x - 5) = 0

~Solve for both factors

x + 3 = 0

x = -3

x - 5 = 0

x = 5

Best of Luck!

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4 0
3 years ago
Which expressions are a factor of -48xyz -24xy +40xyz?
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6 0
3 years ago
Read 2 more answers
Evelyn took a job that paid $100 the first week. She was guaranteed a raise of 2% each week. How much money will she make in all
Zanzabum
This is a growth exponential equation. 
It can be solved 2 ways, but one of them is long and cumbersome and not worth the effort. You could take 2% of the base number and keep doing it 8 times. 

The other way is to realize that 100$ + 2% of 100 dollars can be written as 2% = 2/100 = 0.02 and that can be written as
100( 1 + 0.02 ) = 100(1.02) Now if you want this to be raised 8 times, it will look like this
y = 100(1.02)^(n - 1) for any number of weeks
y(8) = 100(1.02)^7 = 114.87
So at week 1 she has 100 dollars and at week 8 she has 114.87 dollars.

Comment
Realize that if her boss does not want to give her compounded interest that she could still make
Ln = L_{8} = 100 + (n - 1)*0.02*100
L_{8} = 100 + 7*0.02*100 = 100 + 14. = 114
By compounding she makes a whole 0.87$ more. 


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The bones of a mammal were discovered to have 3% as much Carbon-14 as they would have contained when
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I be flexing 3 dollars carbon-144
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