The inequality is
(Subtract 13 from each side)
( Apply Commutative property:
)
( Apply Additive inverse property:
)
( Apply Additive identity property:
)
(Subtract:
)
(Divide each side by 4)
(Cancel common terms)
(Divide:
)
(Multiply each side by negative one and flip the symbol)
(Product of two same signs is positive)
The solution set is
Graph the solution set on a number line.
Note: A dot means that this point is included in the solution set.
The solution set is .
The graph is
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