1.)Which is an example of an algebraic expression?

A. 4(3 + 8)
B. 18^2
C. 3 - a
D. 21 * 4

2.)Which is an expression for 5 more than z?

A.) 5z
B.) z + 5
C.) 5z + 5
D.) 5 - z

3.)Which word phrase can be used to represent the algebraic expression 4(21 + n)

A.) 4 plus the sum of 21 and a number n
B.) 4 times the product of 21 and a number n
C.) 4 times the sum of 21 and a number n
D.) 4 less than the sum of 21 and a number n

4.)Which is an algebraic expression for the word phrase "8 less than the product of 12 and a number x"?

A.) 12x - 8
B.) 8 - 12x
C.) 12 - 8x
D.) 8x - 12