When i double my number, add four, and then subtract my number and subtract three, i get my number plus one. what is my number?

Which of the following is the graph of y= square root -x-3

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

We have 339 ounces of jam to be divided up equally for 12 people how muny ounces will each person get