Question

Help me solve for 1,2,3,and 4 PLEASE

Answer 1

1.$(-7,-3)$

2.$[5,\alpha )$

3.$(-4,-\alpha )$

4.$(-1,0)$

Explanation

a shaded circle in number line indicates that the number in the shaded point is also included in the interval. In the interval notation this limit is expressed using a square bracket.

A circle that is not shaded in a number line indicates that the number is not included in the interval. In interval notation a bracket is used to represent that point on the number line.

An arrow shows the extension to negative or positive infinity. The symbol $\alpha$ is used to represent infinity and is always included in bracket.