Answer :
Given:
Supply equation is,
[tex]Q_s=-8P+24[/tex]Demand equation is,
[tex]Q_d=5P+11[/tex]To determine the equilibrium quantity (Q),
[tex]\begin{gathered} Q_s=Q_d \\ -8P+24=5P+11 \\ 5P+8P=24-11 \\ 13P=13 \\ P=\frac{13}{13} \\ P=1 \end{gathered}[/tex]Answer: option a) 1