What is the linear equation to this? Please show your work. I can take images if you want.

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

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?