Which statement is true about a trend line?

Assume cd | ab are parallel. find m2. a) x= 50° (b) x = 70° c) x = 30° d) x = 60

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.