Please help this is a hard question and i just cant figure it out

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

What is the lcm of 16 and 40 ? 24 and 40 ?

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =