Is this correct please let me know

How much orange juice do you need to make 2 servings of lemony orange slush?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

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