Mrs. wong purchased a computer for $779when she started her own business. the valueof her computer depreciates at a rate of 22%per year. predict the value of mrs. wong'scomputer 5 years after she started herbusiness.

The formula to work out depreciation is SV = IV (1 - r) ^n.

SV= the amount it falls to
IV= the initial value
r= depreciation rate per compounding period
n= number of compounding period

Now you just substitute into the equation and solve from there:
SV= $779 (1 - 0.22)^5