Exponential and Logarithmic Applications

• 62.8 minutes
• 82.6 minutes
• 25.4 minutes
• 77.4 minutes

How many people are there in the world?

• 13.35 billion

• 10 billion

• 9.7 billion

• 52.1 billion

What is the domain of the given function (graph it): f(x) = log (x + 5) - 2

• {x | x > - 5}

• {x | x > 5}

• {x | x > - 2}

• {x | x > 2}

• 3 (log b - log a)

• log 3b - log a

• 3 log b - log a

• 3 log b + log a

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

• 12.375 Years

• 177.073 Years

• 0.175 Years

• 17.509 Years

Which of the following is an exponential decay model?

• y = 3 * (1/2)^x

• y = 1/2 * (3)^x

• y = -2 * (2)^x

• y = -3 * (3/2)^x

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

You invest $5,000 into a savings account that has an interest rate of 5% compounded continuously. In how many years will there be $12000 in the account?

• 12.375 Years

• 177.073 Years

• 0.175 Years

• 17.509 Years

• x = 2

• x = -2

• y = 2

• y = -2