Kirk and Montega have accepted a job mowing the soccer playing fields. They must mow an area 500 feet long and 400 feet wide. They agree that each will mow half the area. They decide that Kirk will mow around the edge in a path of equal width until half the area is left.
43. What is the area each person will mow?
44. Write a quadratic equation that could be used to find the width x that Kirk should mow.
45. What width should Kirk mow?
46. The mower can mow a path 5 feet wide. To the nearest whole number, how many times should Kirk go around the field?
Glencoe Algebra, p. 537
I'm completely befuddled.
The equation I've come up with works when I plug in the book's solution (in Comments section), but I can't use it to arrive at the solution for x to begin with.
Too bad I don't have the answer key.
update: district has now said it will provide the answer key "ASAP. "
We will see.
can you FOIL the answer key?