Answer
w≥−5
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Work Step by Step
−4w≤20⟶ divide both sides by -4; reverse the inequality sign
−4w÷−4≥20÷−4⟶ divide
w≥−5
Check the endpoint.
−4(−5)=?20
20=20✓
Check the inequality.
−4(1)≤?20
−4≤20✓
Since -5 is included in the solution, the endpoint of the graph is a solid circle.