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