Year, t Sales, S(t)
1 62
2 246
3 664
4 1579
5 3258
6 8430
7 14,532
(c) If S−1 exists, find S−1(3,258).
To find S−1(3,258), we need to look at the given table and find the corresponding value in the "Year" column for the given Sales value, which is 3,258.
If you observe the table, you can see that the Sales value of 3,258 is given in the fifth entry of the "Sales, S(t)" column. The corresponding Year value for this Sales value is 5.
Therefore, S−1(3,258) = 5.