what is the answer to this question?

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?