Problem

See Example.ExampleWrite the solution set in set-builder notation and interval notation;...

See Example.

Example
Write the solution set in set-builder notation and interval notation; then graph the solution set.
a. x ≤ −4
Set-builder notation: {x| x ≤ −4}
Interval notation: (−∞,−4]
Graph:
Note When writing interval notation, we write from the leftmost end value to the rightmost end value
b. n<0
Set-builder notation: {n|n < 0}
Interval notation: (−∞,−0)
Graph:
Connection The set {n|n<0} is a way of expressing the set of all negative real numbers.

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Solutions For Problems in Chapter 2.3

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