I need help I’m revising for a test and l don’t understand this question please help!

- 5 ≤ x < 3

Step-by-step explanation:

The lower limit has a solid circle at - 5

This means that x can equal - 5

The upper limit has an open circle at 3

This means that x cannot be equal to 3

The inequality represented by the diagram is then

- 5 ≤ x < 3

The submarine needs to move up, so the rate the submarine needs to move is positive.