Question

Write the interval notation represented by each description below:

Answer 1

Answer:

1. The set of all numbers less than negative ten.

• (- ∞, -10)

2. The set of all positive real numbers.

• (0, +∞)

3. The set of all numbers less than 4.242 and greater than 12.566.

• (-∞, 4.242 )∪ (12.566, +∞)

4. The set of all numbers that are greater than 15 and less than 50.

• (15, 50)

5. The set of all numbers that are at most 5.

• (-∞, 5]

6. The set of all numbers that are at least 18.

• [18, +∞)

Answer 2

Answer:

1. (-∞ , -10]

2. [0, ∞ )

3. [12.566, 4.242]

4. [15, 50]

5. (-∞ , 5]

6. [18, ∞)

Step-by-step explanation: