2017-I-12
答案:(a) $1296\text{ cm}^3$ (b) $384\text{ cm}^2$
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$\begin{
$\begin{array}{rcl}
6 – x & < & 2x - 3 \\
9 & < & 3x \\
x & > &
$\begin{array}{rcl
$\begin{array}{rcl}
y & = & (px+
$\begin{array}{cl}
= & 2000 \times ( 1 + \df
$\begin{array}{cl}
= & 1 : 20\ 000
當 $x=1$ 時,$y