Exponential and logarithmic equations 2

Exponential and logarithmic equations 2

Multiple Choice

Solve.
e^4x=12

• 2.48
• 9.94
• 0.62
• 3

Multiple Choice

Condense

• A

• B

• C

• D

Multiple Choice

3^{2x – 6} = 81

• x = log 4

• x = 5

• x = 4

• x = -1

Multiple Choice

Solve for x.

Log₃(x-5)=2

• 25

• 5

• 130

• 14

Multiple Choice

Solve:

log₆(2x + 3) = 3

• x = 106.5

• x = 100

• x = 16

• x = 50

Multiple Choice

Solve:

log x + log 8 = 2

• 10

• 12.5

• 15

• 17.5

Multiple Choice

log₂(x + 2) + log₂x = 3

• -4, 2

• -2, 4

• 2 ; -4 is extraneous

• 1 ; -3 is extraneous

Multiple Choice

Find the time required for an investment of $1000 to grow to $5000 at an interest rate of 8% per year compounded monthly. (round to nearest year)

• 1 year
• 242 years
• 20 years
• 13 years