Question

which is an algebraic equation 5 more than z?

5z

z + 5

5z + 5

5 - z

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

4 plus the sum of 21 and a number n

4 times the product of 21 and a number n

4 times the sum of 21 and a number n

4 less than the sum of 21 and a number n

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?

2.5 + r

2.5r + r

2.5

2.5r

simplify the following expression 5^2 - 4 / 5 + 2

1/7

6/7

26.2

3

find the value of the expression below for r = 4 and t = 2
t^3 - r + 20 ÷ r

9

72

6

40

Answer 1

Answers are:

1) Z+5

2) 4 times the sum of 21 and the number n

3) 2.5r

4) 3

5) 9