Finding Logs

Rewrite log_x95 = 2.3

• x^2.3 = 95

• 95^2.3 = x

• 2.3⁹⁵ = x

• x⁹⁵ = 2.3

Tags

CCSS.HSF.BF.B.5

Without a calculator, determine which of the following yields a negative answer.

• log₉ (¹/₃₀)

• log₉ 3

• log₉ -81

• log₉ 1

Without a calculator, evaluate log₄1

• ¹/₄

• 0

• -1

• not possible

Without a calculator, evaluate log₁₂₅ 25

• ²/₃

• ³/₂

• ¹/₆

• ¹/₅

Without a calculator, evaluate log₆ -36

• not possible

• -2

• 2

• ¹/2

Which of the following are not allowed bases, b, in a logarithm? log_b A = P Check all that you believe aren't allowed.

• 1

• 0

• fractions

• decimals

• whole numbers

 $Evaluate\ \log_28$  

(a)  

Tags

CCSS.HSF.BF.B.5

 $Evaluate\ \log_864$  

(a)  

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

CCSS.HSN.RN.A.1

 $Evaluate\ \log_77$  

(a)  

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

 $Evaluate\ \log_{10}1000$  

(a)  

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4