 Given the compound interest formulae [math]S=P(1+i)[/math]^{n}, transpose the equation to make P the subject.
 To get [math]P=S/(1+i)[/math]^{n}
 Use your tranposed equation to calculate the following
 Sina is hoping to by a piece of land in 6 years time for $100,000.00. How much should she invest now if the bank offers an interest rate of 9.5%p.a. compounded annually?
 Sione's investment has matured after 10 years at 12% p.a. compounded monthly. How much did he invest if his investment earned $15,000 interest?
 Locate the natural logarithmic key on your calculator (nb most models it will be the "ln" key)
 Calulate ln .0214
 Calulate ln 5.6
 Transpose the CI formulae to make n the subject.
 To get [math]n=ln(S/P)/ln(1+i)[/math]
 Use your transposed formulae to calculate the following
 How long will it take for an investment to double given an interest rate of 9.5% p.a. compounded quarterly?
 An investment of $15,000 has a future value of $21,000 at an interest rate of 6%p.a. compounded annually. How long did it take the investment to mature?
 Locate the exponential key on your calculator (e)
 it is usually the same key as the natural logarithm but you need to access it by pressing shift first
 Calculate
 e^{5.0345}
 e^{1.23}
 Transpose the CI formulae to make i the subject.
 To get [math]i=e[/math]^{ln(S/P)/n} 1
 Use the transposed equation to calculate
 Sui has $75,000 she wishes to buy some land in 4 years time which is worth $95,000. At what interest rate must she invest her money if it is compounded annually?
 Tiana wants to find the interest rate that will triple her investment in 6 years time compounded quarterly?
