Question

In set builder notation how do you write the solutions of 5+ d < 8
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Answer 1

\[5+ d \le 8\]

Answer 2

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Answer 3

Well, \(5+d \leq 8\). So \(d\leq3\)
So d can be anything within the space 3 and below to negative infinity so in set notation it is:
\[\{x\in R\phantom{.}|\phantom{.}-\infty\lt d \leq 3\}\]
or
\[\{x\in R\phantom{.}|\phantom{.}d\in (-\infty,3\phantom{.}\big]\phantom{.}\}\]