Solving Exponential Equations Using Logarithms

Change to Logarithmic Form:
5³ = 125

• log ₅ 125 = 3

• log ₃ 125 = 5

• log ₅ 3 =125

• log₁₂₅ 3 = 5

• about 7 years
• about 10 years
• about 18 years
• about 22 years

• 19th year
• 21st year
• 30th year
• 10th year

The inverse of a logarithmic function and the logarithmic function do what on a graph?

• The are perpendicular

• They are paralell

• They reflect over the line y=x.

• There is nothing special .

Solve for x:

5 e^x = 1.5

• 1.3

• 0.23

• -3.07

• -1.6

log₂(x+3)=4

• 16

• 13

• 3

• 10

log₈(4x+4)=2

• 15

• 12

• 10

• 3

log₆(2x + 3) = 3

• x = 106.5

• x = 100

• x = 16

• x = 50

Solve.
e^4x=12

• 2.48

• 9.94

• 0.62

• 3

• A
• B
• C
• D