1)log (x2 - 3x) = log 28

2)Inx + In(x + 13) = In(8x + 24)

3) Bethany needs to borrow $9000. She can borrow money at 5% simple interest for 6 yr or she can borrow at 4.8% with interest compounded continuously for 6 Yrs. Which option results in less total interest? (Show work) A = Prt; A - Pe^rt

4) The population of the country in 2010 was approximately 38 million with an annual growth rate of 0.804%. At this rate, the population P(f) (in millions) can be approximated by P(1) = 38(1.00809 where r is the time in years since 2010. What would the population be in 2020? (nearest tenth)

5) The level of a sound in decibels is calculated using the formula D= 10 - log(1 1012) where I am the intensity of the sound waves in watts per square meter. A jackhammer puts out 10 watt per square meter. How many decibels is that?

D = 10 . log(I x 10^12)

6) Find out how long it takes a $2500 investment to double if it ls invested at 975

compounded quarterly. Round to the nearest tenth of a year. Use the formula

A =P{1+r }^nt

N