anonymous
  • anonymous
FAN AND MEDAL i DONT WANT ANSWER I NEED HELP The function f(x) = 0.11x + 43 relates how much Derek pays for phone service, f(x), to the number of minutes, x, used for international calls in a month. What is the value and meaning of f(320)?
Mathematics
schrodinger
  • schrodinger
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marihelenh
  • marihelenh
If they give you f(320), you just plug in 320 into the equation where x is.
anonymous
  • anonymous
So @marihelenh f(320)=0.11*320+43
anonymous
  • anonymous
Also here are the answer $78.20; this is the amount Derek pays for 320 months of service $78.20; this is the amount Derek pays for 320 minutes of international calls $92.50; this is the amount Derek pays for 320 months of service $92.50; this is the amount Derek pays for 320 minutes of international calls

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marihelenh
  • marihelenh
That is how you would set it up.
anonymous
  • anonymous
so 78.2 this is the amount derek pays for 320 months of service @marihelenh
marihelenh
  • marihelenh
320 is equal to the number of minutes Derek uses in a month. 320 isn't the months, it is the minutes.
anonymous
  • anonymous
so its B
anonymous
  • anonymous
marihelenh
  • marihelenh
Yep! That is correct.
anonymous
  • anonymous
Thx so much you helped me so much :)

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