It will take them 16 days to complete the job
Answer:
A is the correct answer
Step-by-step explanation:
Answer:

Step-by-step explanation:
Here,
f(x) = y

or , swapping x with y

now to solve for y we get

now we put f inverse x instead of y

I am done.
Answer:
non of these choices I guess
Answer:
trapezium................