Question

Which is an algebraic expression for 5 more than z?
Responses

5z
5z - no response given

z + 5
z + 5 - no response given

5z + 5
5z + 5 - no response given

5 – z

Answer 1

5 + z - no response given

Answer 2

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

4 plus the sum of 21 and a number n
4 plus the sum of 21 and a number n - no response given

4 times the product of 21 and a number n
4 times the product of 21 and a number n - no response given

4 times the sum of 21 and a number n
4 times the sum of 21 and a number n - no response given

4 less than the sum of 21 and a number n

Answer 3

4 times the sum of 21 and a number n - no response given

Answer 4

"8 less than the product of 12 and a number x" can be described by which algebraic expression?
Responses

12x – 8
12x – 8 - no response given

8 – 12x
8 – 12x - no response given

12 – 8x
12 – 8x - no response given

8x – 12

Answer 5

12x - 8 - no response given

Answer 6

Suppose you are building a brick border for a garden by stacking rows of bricks on top of each other. If the height of each brick is 2.5 inches and r represents the number of rows, which algebraic expression would represent the height of the brick wall?
Responses

2.5 + r
2.5 + r - no response given

2.5r + r
2.5r + r - no response given

2.5
2.5 - no response given

2.5r

Answer 7

2.5r - no response given

Answer 8

What determines an atom’s identity?
Responses

the valence number
the valence number - no response given

the number of protons
the number of protons - no response given

the number of electrons
the number of electrons - no response given

the number of neutrons

Answer 9

the number of protons - no response given