Expressions and Equations Pre-Test

Evaluate the expression for n=9, n + 15

• 23

• 24

• 6

• 0

Evaluate the expression 7x when x =2

• 72

• 14

• 9

• 27

Solve:
3(x - 2) = 18

• 6.7

• 4

• 8

• -4

Solve:

7(2x - 4) = 42

• x= 5

• x= 8

• x= 2

• x= 9

8x - 8 = -4x + 16

• x = 8

• x = 16

• x = 24

• x = 2

How many solutions does this equation have?  3x -20 = 3x + 2

• One Solution

• No Solution

• Infinite Solutions

Solve:
3x + 15 = 3(x + 5)

• No Solution

• x = 15

• Infinitely Many Solutions

Which expression is equivalent to the expression 4a + a + a? Select all that Apply

• 6a

• 4 + 3a

• a + a + a + a + a + a

• 6(a)

• 6 x a

The cost for a group of people to go to the movies is given by the expression 8a + 5c, where a is the number of adults and c is the number of children. What are the coefficients of this expression?

• 8 and 5

• 8a + 5c

• a and c

• + and x

Montea is making curtains. She buys 7 yards of fabric that costs p dollars per yard and 5 yards of fabric that costs r dollars per yard. The total amount of his purchase is given by the expression 7p + 5r. What are the terms of the expression?

• 7 and 5

• p and r

• 7p and 5r

• + and x