The inequality is .
Apply subtraction property of inequality: Subtract 2.5 from each side.
\ (Additive inverse property:
)
(Additive identity property:
)
Graph the solution set on a number line
\Note: A dot means that this point is included in the solution set.
Check:
\To check, substitute 0,a number less than or equal to 0, in .
(Additive identity property:
)
The inequality is true.
The inequality solution set is .