logarithms & exponential functions

Rewrite 3⁴ = 81 in logarithmic form.

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

Write  5² = 25  in logarithmic  form

• log₅   2 = 25
• log₅    25  =  2
• log₂  25  = 5
• No Correct Answer

Rewrite log₂8 = 3 in exponential form

• 2⁸ = 3

• 2³ = 8

• 3² = 8

• 8³ = 2

Write in exponential form.
log₂32 = 5

• 2^-5 = 32
• 2³² = 5
• 2⁵ = 32
• 32⁵ = 2

Your $440 gets 5.8% interest compounded annually for 8 years. What will you have in 8 years? A = P(1+r/n)^nt

• $250.78

• $690.78

• $1,130

• $940.78

Logarithmic form is the inverse of exponential form.

• True
• False

Evaluate log₅25

• 2
• 5
• 125

Evaluate: log₉3

• ½
• -½
• 2
• -2

Condense the following logarithm: 3 log₂ x + 2 log₂ y – 4 log₂ z 

• log₂ x³y²∕z⁴
• log₂ x³y²z⁴
• log₂ xyz⁹
• 9log₂ xyz

The common logarithm has what base?

• 10
• 0
• e
• -e