Logarithms review

Rewrite 3⁴ = 81 in logarithmic form.

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

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

log₅25 = ?

• 2
• 5
• 125

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

Condense: log₂6+log₂3=

• log₂18

• log₂2 = 1

• log₂3

• log₂9

Tags

CCSS.HSF.BF.B.5

Write as a single log: log 12 + 2 log x

• log (12 + 2x)
• log (14x)
• log (12 * 2x)
• log (12x²)

Expand/Write as multiple logs.

log (2x³)

• log 2 + 3 log x

• 3 log 2x

• log 2* 3 log x

• 2 log x³

 $\log\ 25\ +\ \log2\ =\ \log\ 27\$  True or False?

• True

• False

Solve for x.
5^x = 1

• 0
• -1
• 2
• 1

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

The common logarithm has what base?

• 10
• 0
• e
• -e

Tags

CCSS.HSF.BF.B.5

Solve:
_{log (4x − 5) = log (2x − 1)} 

• 0
• 1
• 2
• 3

Tags

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

Rewrite as two logarithms.

• A
• B
• C
• D

Tags

CCSS.HSA.SSE.B.3

CCSS.HSF.BF.B.5

CCSS.HSF.IF.C.8