Answer
The test is not today and the party is not tonight.
Work Step by Step
Let
$p$: The test is today.
$q$: The party is tonight.
Thus, in symbols, the given statement is:
$\neg (p \vee q)$
RECALL:
$\neg(p \vee q) = \neg p \wedge \neg q$
Thus, the given statement is equivalent to:
The test is not today and the party is not tonight.
