Chec the picture below
make sure your calculator is in Degree mode, since the angle is in degrees
The mother would be 48 years old.
At the beginning the mother is 36 and the daughter is 12. Making her 3 times older. In 12 years the daughter would be 24 and the mother would be 48. Making her twice as old as her daughter
The first values are the x axis, wich are sideways but the second values are y axis wich are up and down so since you havent given much context they are 10 -10 and 0
You multiply x times x
=x
1 x 3
=3
It is x+3