4.2 logarithms

Rewrite log₃81 = 4 exponentially

• 3⁴ = 81

• 4³ = 81

• 81³=4

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Rewrite log₅ (1/5)= -1 exponentially

• 5^1/5 = -1

• 5^-1 = 1/5

• 1/5⁵ = 1

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Select all that can help you solve for x

• 3⁴

• 81

• 4³

• 64

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Check all that can help you solve for x

• x³ = 1000

• x = 100

• x = 10

• 1000³ = x

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Evaluate log₂(1/2)

• 0.5

• -1

• 1

• -2

• -1

• 1

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• 4

• -4

• 8

• -8

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Rewrite 4² = 16 into logarithmic form.

• log₂4 = 16

• log₄ 16 = 2

• log₄ 2 = 16

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Rewrite log₂8 = 3 in exponential form

• 2⁸ = 3

• 2³ = 8

• 3² = 8

• 8³ = 2

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Rewrite 3⁴ = 81 in logarithmic form.

• log₃4 = 81
• log₈₁3 = 4
• log₃81 = 4
• log₄81 = 3

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