Answer:
5.5 in
Step-by-step explanation:
First we will calculate the total lawn grown after 8 weeks.
Grow Rate = [tex]2\frac{1}{8} in/2 weeks[/tex]
Total lawn grown after 8 weeks = [tex]2\frac{1}{8} *4\\=8.5 in[/tex]
Next we will calculate the total lawn mown after 8 weeks.
Mowing Rate = [tex]1\frac{3}{4} in/2weeks[/tex]
Total lawn mown after 8 weeks = [tex]1\frac{3}{4} *4\\=7 in[/tex]
Lawn Height after 8 weeks = Initial Lawn Height + Total lawn grown - Total lawn mown
= 4 in + 8.5 in - 7 in
= 5.5 in
