Answer
$\overline{\overline{Z}}\ 2.00$
.
Work Step by Step
Treat p as an independent variable (on the horizontal, "x-axis") and q as the dependent variable (on the vertical, "y- axis").
Using your graphing device, enter the formulas:
Demand:$\quad y=31*x^{\wedge}(-0.49)$
Supply:$\quad y=2.5*x+17.5$
Set viewing window to $[0,15]\times[0,35],$ or similar.
The intersection point is at approximately $(1.95,22.37)$, so the rounded price $p$ when demand=supply (the equilibrium price) is about:
$\overline{\overline{Z}}\ 2.00$
