1. Solve the following equations. a) 2* = 8 b) 10* = 1,000,000 c) 3* = _ d) 25* = 5 e) 7* = 1 f) 4* = 0 2. Evaluate the following logarithms using a calculator. Round to the nearest hundredth. a) In 36 b) log 4 c) In 49 d) In 4 + In 9 e) log 28 - log 7 f) 2 In 7 3. The decibel scale for measuring the intensity of sound is a logarithmic scale defined by the formula B = 10 10g (10-12), where B is the intensity of the sound in decibels (dB) and I is the intensity of the sound in watts per square meter (W/m-). a) The average human threshold of hearing is 10712 W/m'. What is the corresponding measure on the decibel scale? b) A normal voice volume for conversation has sound intensity of 10" W/m . What is the corresponding measure on the decibel scale? c) A jet engine has sound intensity of 100 W/m. What is the corresponding measure on the decibel scale