45-15= 30-28= 2+18=20
Is that what the question was asking??
as the following pic you can see the answer.
#diameter is 8 so radius is 4
The answer is A. After you square root both sides, you have to add 3 to both sides and then divide both sides by 4.
11 = 1.375 * 8
22 = 1.375 * 16
33 = 1.375 * 24
Therefore y varies directly with x.
Answer: C ) yes; y = 1.375 x