618 runners registered for the marathon. of these runners 0.8% completed the race in under 2 hr 15 min. a) how many runners completed the race in this time?
explain how to solve this

If n stands for number sold and c stands for cost per item, in which column would you use the formula: ? a. column d c. column f b. column e d. column g

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

How do you solve a question like this?