Evaluating Expressions and Equations

Evaluate the expression 3c + 7d. Let c=3 and d=2.

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• 23

• 27

• 29

What is the first step to solve this equation? 11 -3x = 44

• Subtract 11 from both sides

• Add 3 to both sides

• Divide -3 on both sides

• Add 11 to both sides

Solve: 3x - 8 = 22

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• 10

• 11

Identify the constant(s) in the expression 2x + 4 - x + 3x.

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• 2 and 3

• x

• 2, 4 and 3

Evaluate bc + 5a when a =3, b=4, and c=-6.

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• -9

• -38

• 38

Evalaute $b^2$ + 4 when b=3.

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Evaluate -2x if x=10.

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• -20

• 12

• -12

Ana has 15 postcards. Gina has x postcards. Together they have 32 postcards. How many postcards does Gina have?

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• 16

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Odylon has 40 marbles. His brother has thrice as many marbles as he does. They have 160 marbles, how many marbles does Odylon’s brother have?

• 60

• 100

• 120

• 160

The quotient of a number and 8 is decreased by 5. The result is 2. What is the number?

• 56

• 42

• 24

• 36