Question

1. a scuba diver is 3.8 meters below the surface of the water. he is descending at a rate of 0.5 meters per minute. write an algebraic expression to describe the depth of the scuba diver after any number of minutes.
2. describe what the variable represents in this situation

Answer 1

Solution

1. The algebraic expression =  -0.5n - 3.8, where n is the number of minutes.

2. Here the variable "n" represents the number of minutes.

Thank you.

Answer 2

For this case we have the following data:

• 3.8 is the distance below the surface of the water

• 0.5 is the rate of descent, given in meters per minute

In this way, the depth of the diver for a certain number of minutes is given by:

$3.8 + 0.5x$, where x represents the number of minutes

Answer:

Question 1: $3.8 + 0.5x$

Question 2: x represents the number of minutes