LT 20-21 Review (log and exponent equations)

Write the equation in exponential form.

log₂(x - 4) = 6

• x - 4 = 6²

• 6₂ = x - 4

• 2^(x-4) = 6

• 2⁶ = x - 4

Tags

CCSS.HSF.BF.B.5

log₂(x+3)=4

• 16

• 13

• 3

• 10

Tags

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

Log with a base "e" (log_e) is the same thing as...

• "e"
• Natural Logarithm (LN)
• Common Logarithm (Log)
• Natural Log, base "e"
  LN_e

Tags

CCSS.HSF.BF.B.5

Solve the equation for x.

• 7.389
• 0.693
• 0.0183
• 6.581

Tags

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

• no solution
• only 6
• 6 and -2
• 3

log₂(x² - 6) = log₂(2x+2)

• 4, -2

• No Solution

• 4

• -2

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.4

Solve for x. 

 $11^x=74$  

• 4.8816

• 1.7949

• 1.8692

• 4.3041

Tags

CCSS.HSF.LE.A.4

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

• x = -1
• x = -4
• x = -3
• x = 1

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSF.BF.B.5

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.4

2 * 4^{3x – 6} – 8 = 120

• x = 3
• x = 4
• x = 2.9
• x = 8

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2

Solve for x. 

 $9\left(5\right)^{-9.3x}=9$  

• 0.04

• 0

• 0.02

• -0.02