Answer:
24+24x I believe is the answer. Good luck on your test :)
I believe it's a linear function I could be totally wrong math isn't my strongest subject.
Answer: 23in squared
Step-by-step explanation:
9 plus 4 plus 10
See picture for solution steps and answer.
The formula is

r², and to find r, or radius, you divide the diameter by 2. Your radius is 12.5, so you just plug that into your formula, and you have pi(12.5)², and simplify that to pi(156.25) and then your answer is <span>490.873852123. You probably want to round to the nearest hundredth, I don't know if you have specific directions, but if so your final answer would be 490.87.</span>