Solve Problems Using Systems of Linear Equations
-You Invested $\$ 13,200$

Multiple Choice

Solve Problems Using Systems of Linear Equations
-You invested $\$ 13,200$ and started a business selling vases. Supplies cost $\$ 20$ per vase and you are selling each vase for $\$ 31$ . Let $x$ represent the number of vases produced and sold and write the cost function, $C$ , and revenue function, $R$ .

A) $C ( x ) = 20 x + 13,200$
$\mathrm { R } ( \mathrm { x } ) = 31 \mathrm { x }$
B) $C ( x ) = 20 x + 31$
$\mathrm { R } ( \mathrm { x } ) = 13,200 \mathrm { x }$
C) $C ( x ) = 20 x + 13,200$
$R ( x ) = 31$
D) $C ( x ) = 20 x + 13,200 x$

$R ( x ) = 31 x$