Can someone me solve this : at a store, 2 pillows and 3 pillow cases together cost $73.08. the total cost of 3 pillows and 4 sheets is $120.82. if the price of the pillows is 3 times as much as the price of a pillow case, what is the total cost of 5 pillows and 7 sheets?

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