Quiz Solving Log/Ln

Solve:

log(x) + log(x+3) = 1

• 5

• -2

• -5

• 2

Solve:

log₉(x)+log₉(x+2)=log₉(35)

• 5

• -7

• 5, -7

• -7, -13

Rewrite the exponential as a log.

2^3x = 12

• ln(2)= 3x

• log₂(12)= 3x

• ln(6)=3x

• log₁₂(2)= 3x

Solve:

log₂(x + 3)=5

• x=2

• x=29

• x=7

• x=32

Solve:

2log₆(x-8)=2

• 14

• 81/8

• 18

• 9969

Solve  $\log_3\left(2x-7\right)=4$  

• x=41

• x=42

• x=43

• x=44

Solve  $\ln\left(2x+4\right)=\ln\left(4x-8\right)$  

• x=4

• x=5

• x=6

• x=7

Solve $2^{\left(x+3\right)}=16$  

• -1

• 1

• 7

• 2

If $1200 is put into an account that earns 3.2% interest compounded continuously, Approximately how long will the account take to have a balance of $7200?

• 56 years

• 59 years

• 62 years

• 67 years

Solve. Round your answers to the nearest thousandth. Check for extraneous solutions. $\ln x-\ln4=\ln5$  

•  $x=9$  

•  $x=20$  

•  $x=1$  

•  $x=2$