Log equations quiz

log 2c + log 8 = log 80

• 5

• 36

• 320

• 2

log₂ q - log₂ 3 = log₂ 7

• 21

• 7/3

• 10

• 4

3log₈ 2 - log₈ 4 = log₈ b

• 32

• 4

• 2

• 64

log 2 + log (2x - 3) = log 2

• 3/2

• 4

• -1

• 2

log₂ (x + 4) + log₂ 2 = 3

• 5/2

• 22/5

• 0

• 8

• 5

• -11

• -4

• 55

• 89

• 6

Solve: 9^8-x = 27^x-3

• x = 5
• x = -5
• x = 1/5
• x = -1/5

Solve: 7^-x = 49

• x = 1
• x = -1
• x = 2
• x = -2

Sovle for x:
5^{-3x - 1} = 25

• x = -1
• x = -4
• x = -3
• x = 1