we know that
The area of a rectangle is equal to
A=L*W
where
L is the length of the rectangle
W is the width of the rectangle
Step 1
Find the area of Mr. Nunez's lawn
in this problem we have
L=50 ft
W=35 ft
so
A=50*35=1,750 ft^2
Step 2
Find the cost of the lawn service charge per square foot
Divide the total paid by the area
[tex]\frac{350}{1,750} \frac{\$}{ft^{2}} =0.2\frac{\$}{ft^{2}}[/tex]
therefore
the answer is
[tex]0.2\frac{\$}{ft^{2}}[/tex]
