The Following Table Represents the Amount of Monthly Data Handled $d$

Short Answer

The following table represents the amount of monthly data handled by an Internet server, sampled at six month intervals for the years 1993-1995.

Let $d$ be the number of data packets handled monthly (in billions), and $t$ be time in years since December, 1992. The best exponential model for this data is of the form
$d(t)=a b^{t}$ , where $a=\ldots$ and $b=\ldots$ . Give both answers to 6 decimal places.