Answer :
We are given the following information about the sales of personal computers.
Initial sales: P = $450 million
Growth rate: r = 20% = 0.20
Number of years: t = 1992 - 1986 = 6 years
The predicted annual sales for the year 1992 is given by
[tex]A=P(1+r)^t[/tex]Let us substitute the given values into the above formula
[tex]\begin{gathered} A=P(1+r)^t \\ A=450(1+0.20)^6 \\ A=450(1.20)^6 \\ A=\$1343.6928\; \text{million} \end{gathered}[/tex]Therefore, the predicted annual sales for the year 1992 are $1343.6928 million.