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anonymous

  • one year ago

please help me I will reward! Which of the following exponential functions goes through the points (1, 20) and (2, 80)? f(x) = 5(4)−x f(x) = 4(5)−x f(x) = 5(4)x f(x) = 4(5)x

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  1. sweetburger
    • one year ago
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    none of these are exponential the way they are written but i will assume that they should be written such as for a. f(x)= 5^((4)-x)

  2. sweetburger
    • one year ago
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    I really dont know i cant determine what is exponent and what isnt

  3. anonymous
    • one year ago
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    i just copied and pasted what was given but thank you for trying to help. I'm in algebra 1 if thats easier

  4. sweetburger
    • one year ago
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    could u take a screenshot?

  5. anonymous
    • one year ago
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    I just got a new computer so i don't know how. Can I give you another problem instead?

  6. sweetburger
    • one year ago
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    ya sure just so you know you can solve the question you are given by plugging in 1 or 2 for x and making sure that you get either y=20 for x=1 or y=80 for x=2

  7. sweetburger
    • one year ago
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    and ya send the next question

  8. anonymous
    • one year ago
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    The value of a rare painting has increased each year since it was found at a garage sale. The value of the painting is modeled by the function f(x) = 799(1.03)x. What does the 799 represent? What will the painting be worth after 5 years? Round your answer to the nearest dollar. 799 represents the value of the painting when it was found; the painting will be worth $926 after 5 years 799 represents the increase in the value of the painting; the painting will be worth $103 after 5 years 799 represents the value of the painting when it was found; the painting will be worth $804 after 5 years 799 represents the total value of the painting; the painting will be worth $926 after 5 years

  9. sweetburger
    • one year ago
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    799 represents the initial value of the painting

  10. sweetburger
    • one year ago
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    or the value of the painting when it was found

  11. anonymous
    • one year ago
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    yeah, but which one? your answer isn't that specific

  12. sweetburger
    • one year ago
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    well I believe the way the 799(1.03)(x) has an exponent but I dont know where so I cant solve it

  13. anonymous
    • one year ago
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    I believe the answer is A :)

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