1. what is the simplified form of the expression? hint: combine like terms 7m2 + 6.5n – 4n +2.5m2 – n  9.5m2 + 1.5n  4.5m2 + 1.5n  9.5m2 – 1.5n 2. simplify the expression 21 27 3 1 m  . hint: use the distributive property  7m + 27  7m + 9  63m + 9 3. what is the sum?       8 3 3 7 hint: find a common denominator    4. which property is illustrated by the statement? 2 9 3 9 3 2             associative property of addition  commutative property of multiplication  inverse property of multiplication 5. which property is illustrated by the statement? 8 + 3.4 = 3.4 + 8  associative property of addition