The number of sections made is 
<em><u>Solution:</u></em>
Given that, Sarah paints a straight line
The line is
feet
She wants to divide the line into sections that are each 18 ft long
To find: Number of sections
From given,


Number of sections can be found by dividing the total length of line by length of 1 section

Substituting the values, we get,

Thus number of sections made is 