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anonymous

  • one year ago

Someone please help , how do you solve this ? The function f(x) = 1.50x + 12.50 relates how much Kelsey pays for digital service, f(x), to the number of movies, x, she streams in a month. What is the value and meaning of f(18)? $27.00; this is the amount Kelsey pays for 18 months of service $27.00; this is the amount Kelsey pays for 18 movies in 1 month $39.50; this is the amount Kelsey pays for 18 months of service $39.50; this is the amount Kelsey pays for 18 movies in 1 month

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  1. welshfella
    • one year ago
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    the x intercept is the value of x when y = 0 and y intecept is value of y when x = 0 so to find the x intercept solve for x :- 3x - 2(0) = 18 3x = 18 x = ?

  2. anonymous
    • one year ago
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    Hey sorry that was the wrong question because it dosnt make sense it's ... The function f(x) = 1.50x + 12.50 relates how much Kelsey pays for digital service, f(x), to the number of movies, x, she streams in a month. What is the value and meaning of f(18)?

  3. TheSmartOne
    • one year ago
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    That's that same question though...?

  4. anonymous
    • one year ago
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    Oh gosh nvm , and x=15

  5. TheSmartOne
    • one year ago
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    wrong. You are multiplying the 3 to x. So you have to divide to get rid of it: \(\sf\Large \frac{3x}{3}=\frac{18}{3}\)

  6. anonymous
    • one year ago
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    x=6 then ?

  7. TheSmartOne
    • one year ago
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    correct

  8. anonymous
    • one year ago
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    Okay but now what ? What do i do with the 6?

  9. TheSmartOne
    • one year ago
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    I don't know why @welshfella had you calculate the x-intercept... It is of no importance in the question :/

  10. TheSmartOne
    • one year ago
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    f(x) = 1.50x + 12.50 They want to know what f(18) = ? so plug in x=18 and tell me what you get :)

  11. anonymous
    • one year ago
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    39.5

  12. TheSmartOne
    • one year ago
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    correct.

  13. TheSmartOne
    • one year ago
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    so what 2 answer choices can we eliminate?

  14. anonymous
    • one year ago
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    A & b

  15. TheSmartOne
    • one year ago
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    good job and I think welshfella 's comment was for your previous question which you editted :p

  16. anonymous
    • one year ago
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    Yes it was haha

  17. TheSmartOne
    • one year ago
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    read this line: The function f(x) = 1.50x + 12.50 relates how much Kelsey pays for digital service, f(x), to the number of movies, x, she streams in a month. what do you think would be the answer between C and D?

  18. anonymous
    • one year ago
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    D

  19. anonymous
    • one year ago
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    @TheSmartOne

  20. TheSmartOne
    • one year ago
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    correct, great job :)

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