(8) check my answer geo

i did 9x + 15 + 3x - 15 = 180 since same side interior angles are supplementary

x = 15

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

What are different types of statistical programs

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line