Solve the Problem $p = 100 - 10 x \quad$ Demand Curve

Multiple Choice

Solve the problem.
-Use inverse matrices to find the equilibrium point for the demand and supply curves below.
$p = 100 - 10 x \quad$ Demand curve
$p = 30 + 5 x \quad$ Supply curve

A) $\left( \frac { 20 } { 3 } , \frac { 190 } { 3 } \right)$
B) $( 70,380 )$
C) $\left( \frac { 14 } { 3 } , \frac { 160 } { 3 } \right)$
D) $\left( \frac { 26 } { 3 } , \frac { 220 } { 3 } \right)$