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WARM UP

WARM UP. 3. OPERATIONS WITH DECIMALS Find the value of the expression. 32.8 – 4 3.98 + 5.50 0.1(50). WARM UP. 2. OPERATIONS WITH DECIMALS Find the value of the expression. 32.8 – 4 3.98 + 5.50 0.1(50). WARM UP. 1. OPERATIONS WITH DECIMALS Find the value of the expression. 32.8 – 4

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WARM UP

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  1. WARM UP 3 OPERATIONS WITH DECIMALSFind the value of the expression. 32.8 – 4 3.98 + 5.50 0.1(50)

  2. WARM UP 2 OPERATIONS WITH DECIMALS Find the value of the expression. 32.8 – 4 3.98 + 5.50 0.1(50)

  3. WARM UP 1 OPERATIONS WITH DECIMALS Find the value of the expression. 32.8 – 4 3.98 + 5.50 0.1(50)

  4. WARM UP 0 OPERATIONS WITH DECIMALS Find the value of the expression. 32.8 – 4 3.98 + 5.50 0.1(50)

  5. Required Class Supplies Paper Pencil (no pen) Scientific Calculator (preferably Texas Instruments TI-30x) *you will need these supplies everyday!

  6. 1.2 Exponents and Powers • GOAL: Evaluate a Power. • KEY WORDS: • Power • Exponent • Base • Grouping Symbols

  7. 1.2 Exponents and Powers An expression like 23 is called a power. The exponent 3 represents the number of times the base 2 is used as a factor. 23= 2∙ 2∙ 2 exponent base

  8. 1.2 Exponents and Powers The expression 23 means “multiply 2 by itself 3 times.” The numbers you multiply are factors. In general, an an= a∙ a∙ a … ∙ a n times

  9. 1.2 Exponents and Powers EXAMPLE 1: Read and Write Powers Express the power in words. Then write the meaning. EXPONENTIAL FORM WORDS MEANING 42Four to the second power4 ∙ 4 or four squared 53Five to the third power5 ∙ 5 ∙ 5 or five cubed x6x to the sixth power x ∙ x ∙ x ∙ x ∙ x ∙ x

  10. 1.2 Exponents and Powers CHECKPOINT Write the expression in exponential form. 3 squared x to the fourth power s cubed

  11. 1.2 Exponents and Powers EXAMPLE 2: Evaluate the power Evaluate x4 when x = 2 SOLUTION Substitute 2 for x. x4 = 24 Write out the factors. = 2 ∙ 2 ∙ 2 ∙ 2 Multiply the factors. = 16 ANSWER > The value of the power is 16.

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