Five-Minute Check (over Lesson 1–5)Main Idea and VocabularyExample 1:Evaluate an Algebraic ExpressionExample 2:Evaluate ExpressionsExample 3:Evaluate ExpressionsExample 4:Real-World Example

• variable• algebra• algebraic expression• coefficient

• Evaluate simple algebraic expressions.

Evaluate an Algebraic Expression

Evaluate t – 4 if t = 6.

Answer: 2

t – 4 = 6 – 4 Replace t with 6.

= 2 Subtract.

Interactive Lab: Modeling Algebraic Expressions

1. A2. B3. C4. D

A B C D

0% 0%0%0%

A. 3

B. 7

C. 11

D. 28

Evaluate 7 + m if m = 4.

Evaluate Expressions

Evaluate 5x + 3y if x = 7 and y = 9.

5x + 3y = 5(7) + 3(9) Replace x with 7 and y with 9.

= 35 + 27 Do all multiplications first.

= 62 Add 35 and 27.

Answer: 62

1. A2. B3. C4. D

A B C D

0% 0%0%0%

A. 2

B. 5

C. 24

D. 72

Evaluate 4a – 2b if a = 9 and b = 6.

Evaluate Expressions

Evaluate 5 + a2 if a = 5.

5 + a2 = 5 + 52 Replace a with 5.

= 5 + 25 Evaluate the power.

= 30 Add.

Answer: 30

1. A2. B3. C4. D

A B C D

0% 0%0%0%

A. 15

B. 18

C. 164

D. 441

Evaluate 24 – s2 if s = 3.

http://glencoe.mcgraw-hill.com/sites/0078740460/

Answer: about 37.2°C

Subtract 32 from 99.

Multiply 5 and 67.

Divide 335 by 9.

Replace F with 99.

1. A2. B3. C4. D0% 0%0%0%

A. $4.25B. $7.75C. $9.25D. $12.75

BOWLING David is going bowling with a group of friends. His cost for bowling can be described by the formula 1.75 + 2.5g, where g is the number of games David bowls. Find the total cost of bowling if David bowls 3 games.

End of the Lesson

Five-Minute Check (over Lesson 1–5)

Image Bank

Math Tools

Arithmetic Sequences

Modeling Algebraic Expressions

Function Machines

1. A2. B3. C4. D

A B C D

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(over Lesson 1-5)

A. 5 packages of hot dog buns and 4 packages of hot dogs

B. 3 packages of hot dog buns and 5 packages of hot dogs

C. 4 packages of hot dog buns and 5 packages of hot dogs

D. 5 packages of hot dog buns and 3 packages of hot dogs

Solve using the guess and check strategy. Hot dogs come in packages of 10. Hot dog buns come in packages of 8. How many packages of hot dogs and hot dog buns would you need to buy to have enough buns for every hot dog?

1. A2. B3. C4. D

A B C D

0% 0%0%0%

A. 8

B. 6

C. 5

D. 7

Solve using the guess and check strategy. A number is multiplied by 8. Then 5 is subtracted from the product. The result is 43. What is the number?

(over Lesson 1-5)

1. A2. B3. C4. D

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(over Lesson 1-5)

A. 20 student tickets and 60 adult tickets

B. 90 adult tickets and 30 student tickets

C. 60 adult tickets and 20 student tickets

D. 90 student tickets and 30 adult tickets

Solve using the guess and check strategy. The school carnival made $420 from ticket sales. Adult tickets cost $5 and student tickets cost $3. Also, three times as many students bought tickets as adults. How many adult and student tickets were sold?

1. A2. B3. C4. D

A B C D

0% 0%0%0%

(over Lesson 1-5)

A. 3, 9, 27, 81, 243, ...

B. 1, 8, 27, 64, 125, ...

C. 3, 6, 9, 12, 15, ...

D. 1, 4, 7, 10, 13, ...

Which sequence follows the rule 3n, where n represents the position of a term in the sequence?