Can some one me figure out how to do problems 30-41

What could explain what happened when the time was equal to 120 minutes

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?