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Sagot :
B.
There is a 10 cent difference in the cost per minute, which is where the -.10x comes from. There is also a 10 dollar difference in the start up fees, which gives you the +10.
So, if you were to choose Cell phone company Z, you would lose 10 cents per minute, but save gain 10 dollars at the beginning. -10x+10
There is a 10 cent difference in the cost per minute, which is where the -.10x comes from. There is also a 10 dollar difference in the start up fees, which gives you the +10.
So, if you were to choose Cell phone company Z, you would lose 10 cents per minute, but save gain 10 dollars at the beginning. -10x+10
Function that represents the difference in cost between company Y and company Z is
[tex]f(x)=-0.10x+10[/tex]
Given :
Cell phone company Y charges a $10 start up fee plus $0.10 per minute, x.
Lets frame equation for each company
Company Y
Charge y = cost per minute (x) + initial start up fee
[tex]y=0.10x+10[/tex]
Cell phone company Z charges $0.20 per minute, x, with no start up fee
[tex]y=0.20x+0[/tex]
Now we write the difference in cost
Subtract the cost to find the difference in cost
[tex]f(x)=0.10x+10-0.20x\\f(x)=-0.10x+10[/tex]
Function represents the difference in cost between company Y and company Z is
[tex]f(x)=-0.10x+10[/tex]
Learn more : brainly.com/question/16744057
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