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To find the inverse of a function, you have to switch y for x and then solve for y again. These are the steps:

y = 5x - 20

x = 5y - 20

5y = x + 20

y = 0.2x + 4 or f(x)^-1 = 0.2x + 4

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f'(x) = x/5 + 4

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9y ago
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Q: What is the inverse function for f(x)5x-20?
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