anonymous
  • anonymous
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
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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sweetburger
  • sweetburger
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)
sweetburger
  • sweetburger
I really dont know i cant determine what is exponent and what isnt
anonymous
  • anonymous
i just copied and pasted what was given but thank you for trying to help. I'm in algebra 1 if thats easier

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sweetburger
  • sweetburger
could u take a screenshot?
anonymous
  • anonymous
I just got a new computer so i don't know how. Can I give you another problem instead?
sweetburger
  • sweetburger
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
sweetburger
  • sweetburger
and ya send the next question
anonymous
  • anonymous
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
sweetburger
  • sweetburger
799 represents the initial value of the painting
sweetburger
  • sweetburger
or the value of the painting when it was found
anonymous
  • anonymous
yeah, but which one? your answer isn't that specific
sweetburger
  • sweetburger
well I believe the way the 799(1.03)(x) has an exponent but I dont know where so I cant solve it
anonymous
  • anonymous
I believe the answer is A :)

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