revision mid term test pre-calculus

• 5
• 13
• 84
• -20

• A
• B
• C
• D

Write the equation in exponential form.

log₂(x - 4) = 6

• x - 4 = 6²

• 6₂ = x - 4

• 2^(x-4) = 6

• 2⁶ = x - 4

log₃(4x + 8) - 7 = -3

Next step?

• Add 7 to both sides.

• 3^-3 = 4x + 8

• 4x + 8 = 10

• 4x + 1 = -3

ln(x+3)=4

• 1

• $e^4-3$

• $e^2-3$
  

• $e^2+3$
  

Rewrite 3⁴ = 81 in logarithmic form.

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

Condense

• A
• B
• C
• D

Solve

• 46/5

• 5/46

• -46/5

• -5/46

log(x+6) = 1

• 4
• 4.222
• -5
• -9.550

What is the value of x?

• 2

• 1/3

• 1/35

• -1/35