Answer
$24.75
Work Step by Step
Create a proportion using ratios of cost:linear foot.
$\frac{\$7.50}{5\ ft}=\frac{\$x}{16.5\ ft}$
Set the product of the means equal to the product of the extremes and solve for the variable.
$5\times x=7.50\times 16.5$
$5x=123.75$
$5x\div5=123.75\div5$
$x=24.75$
