What is the answer and how do you solve it

Issof claims that the scale factor is 1/2. which statement about his claim is correct

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer