Question

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

What is the rock climber's initial height above sea level?

Enter your answer in the box.

_____meters

Answer 1

Answer: 50 meters

Step-by-step explanation: 2 is the amount of meters climbed every minute, for example 2 * 10 (x) = 20 meters in 10 minutes. So the starting point is 50 meters above sea level.

Answer 2

The expression 2x + 50 represents the elevation above sea level of the climber. It can be written as a function as follows:

f(x) = 2x + 50 where f(x) is the height and x is time.

We can obtain the initial height when we set time 0 in which the climber has not started climbing yet. Therefore, the initial height of the climber would be 50 meters above sea level.