The growth of an apple tree was measured. The tree grew 15 inches per year. On average, how many millimeters did the tree grow per day?

Can you simplify 4/7? 24 points will be awarded!

With alll of except for the 2 that i did already

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