20. Translate the following phrase into an algebraic expression: "the product of n and 7 divided by 16." 21. What property is illustrated in the following expression: a(1) = a
A) Multiplicative Identity
B) Associative Property of Addition
C) Commutative Property of Addition
D) Multiplicative Property of Zero
E) Commutative Property of Multiplication

22. What property is illustrated in the following expression: (x + 4) + y = x + (4 + y)
A) Multiplicative Identity
B) Associative Property of Addition
C) Commutative Property of Addition
D) Multiplicative Property of Zero
E) Associative Property of Multiplication