## Intermediate Algebra: Connecting Concepts through Application

a. $C=1.50(x)+230$ b. 320 dollars c. 146 windows
a. C=cost to clean windows for one day x=number of windows washed $C=1.50(x)+230$ b. x=60 $C=1.50(60)+230$ $C=90+230$ $C=320$ c. C=450 $450=1.50(x)+230$ $450-230=1.50(x)$ $220=1.50(x)$ $220\div1.50=x$ $x=146.67$ $x=146$