Logarithms

Rewrite log₂8 = 3 in exponential form

• 2⁸ = 3

• 2³ = 8

• 3² = 8

• 8³ = 2

Rewrite 3⁴ = 81 in logarithmic form.

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

Write in exponential form

log₂32 = 5

• 2^-5 = 32

• 2³² = 5

• 2⁵ = 32

• 32⁵ = 2

Rewrite in exponential form.

• A
• B
• C
• D

Rewrite the equation in logarithmic form.

• A
• B
• C
• D

Solve for x: log₃ (x + 8) = 4

• 73

• 56

• 82

• 81

Solve for a: log₅ (2a + 1) = 3

• 121

• 73

• 242

• 62

Solve for x: log₇ x = -2

• -49

• 2.6

• -128

• 1/49

Solve for x: log_x 81 = 4

• 3

• 43,046,721

• 3.1

• 16

Solve for x: log₃ (3x - 5) = 0

• 5/3

• 6

• 2

• 11/3