Question

The expression 2x+50 represents the elevation above sea level, in meters, of a rock climber after x minutes of climbing.

Answer 1

Answer:

The rock climbers initial height above sea level is:

                                 50 meters.

Step-by-step explanation:

The expression which is used to represent the elevation above sea level, in meters, of a rock climber after x minutes of climbing is given by:

                                     2x+50

Now, we are asked to find the rock climbers initial height above sea level i.e. we are asked to find the value of the expression when x=0.

Hence, when x=0 we  have:

2x+50=2×0+50

          = 50

Hence, the answer is: 50 meters.

Answer 2

X=0， The answer is 50.