Can Anyone help me out on this please ?

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

Which number produces a rationale number when multiplied by 1/5