Answer:
f⁻¹(1/5) = 2
Explanation:
If f(x) = (2x -3)/5
To find inverse of f(x), make x the subject.
Then,
To find f⁻¹(1/5), simplify insert [x = 1/5 or 0.2]
which yields
9ft to 6 yard can be written as a fraction 6/9
6/9 = 2/3
3 ft to 2 yards is the simplest form of this ratio
Robert
Or bob because I like those names for farmers ...