The correct answer is b. The domain of the function is in terms of x, so we are looking at the x-axis. The line stretches from 3 to 7 on the x-axis, so we know that b is our answer.
17500 i think but u didn’t give enough info so it could be any without the extra info
Its C. The point is at 3 and goes down, therefore C.
A is your answer tell me if I am wrong.
Y=x i hope this helps you!