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f (x) = 560 + 40x. (a) Find a formula for the inverse function f �1
1 answer
if y = f(x) then x = f
-1
(y)
so.
y = 560+40x
7-560 = 40x
(y-560)/40 = x
so,
f
-1
(x) = (x-560)/40
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