A hiker records his attitude over time and lists the data in the table below. HIKING ALTITUDES Time Altitude (In minutes) (in feet) 25 30 50 60 75 90 100 120 How fast is the hiker climbing? 0.4 foot per minute 0.8 foot per minute 个​

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