1 Euro = 1.09 dollars = 1 + 0.09 dollars
then
Part 1
f(x) dollars == x ( 1- 9/100) euros
Part 2
What does f-1(x) represent?
Value in euros of one dollar
Part 3
$12,250 dollars represent = 12250 x 91/100 = 11147.5
Answer is 11147.5 Euros
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