Answer
a. $C=1.50(x)+230$
b. 320 dollars
c. 146 windows
Work Step by Step
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
$450=1.50(x)+230$
$450-230=1.50(x)$
$220=1.50(x)$
$220\div1.50=x$
$x=146.67$
$x=146$
