Answer
Part 1) f(x)⁻¹ = 40 - x/2,500
Part 2) quantity
Explanation
f(x)= 100,000-2,500x
In finding the inverse of F(x) we make x the suject of the formula.
f(x)= 100,000-2,500x
2,500x = 100,000 - f(x)
x = 100,000/2,500 - f(x)/2500
x = 40 - f(x)/2,500
Now interchange x with f(x).
f(x)⁻¹ = 40 - x/2,500
I/3 of 123 is 41
41 dollars are taken off, so 123-41=82
the sale price is 82 dollars
Answer:
forty one point three hundred and forty four
Step-by-step explanation:
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