The image of x is the point (7,5).
Draw the line x= 3 and treat it like a mirror.
When you reflect the points of the triangle just count how many units each point is from the mirror (x=3)
Count the same number of points in the opposite direction (away from the mirror) and you will arrive at the coordinates for the points
To make things easier, Moesha will be variable 'm' and Damian 'd'.
Number of songs in m's library would be 2d+17 and if d= 5, m=27
The second one I believe?