Darla bought 2 1/2 yards of ribbon. She had 2 feet 8 inches left after trimming some curtains. How many inches of ribbon did Darla use to trim the curtains?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point