A rectangular lawn has a length that is 3 yards greater than the width. The area of the lawn is 70 square yards.
Note: The formula for the area of a rectangle is Area = length $\times$ width .

a) Write the polynomial equation for the area of the lawn. Use the variable $x$ to represent the width of the lawn.
Answer:

b) Solve the equation and give the width of the lawn.
Width: