Question

1. Which is an example of an algebraic expression?

A.) 4(3 + 8)
B.) 182
C.) 3 – a
D.) 21 • 4

2. Which is an algebraic 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. .

Answer 1

1. An algebraic expression includes number and variables. So, the answer for this item is letter "C. 3 - a"
2. From the given, 5 should be added to z to make z + 5. Therefore, the answer is letter B. 
3.  The answer to this is letter "C. 4 times the sum of 21 and a number n."