First answer should be correct ..
It is given in the question that f is a one-to-one function.
And for a one-to - one function,
If

So we will get

I think the right answer to your question may be F I don’t know for sure
<span>The average length of a bike (including the length of both wheels) is about 68 inches.For finding the true answer we must follow the following convertion rule: 1 inch is equivalent to 0.02 yard, so 68 inches equal to 1.88 yards. Consequently, the value nearest 1.88 yards is 1.5 yards, so the answer is the choice A: 1.5 yards. </span>