Jessica wants to seed her backyard with grass seed. Her yard is 120 fet long and 90 feet wide. If Jessica buys bags of seeds that cover 600 square feet, how many bags of seed will she need?

A = LW

A = 120 * 90
A = 10,800 sq. ft

10,800 / 600 = _______ bags

Find the area of the rectangular yard.

A = length times width

Then, divide the area by 600.

To find out how many bags of seed Jessica will need, we need to determine the total area of her yard and then divide it by the coverage area of each bag of seeds.

The area of a rectangle is calculated by multiplying its length and width. In this case, the length of Jessica's yard is 120 feet, and the width is 90 feet. So, the total area of her yard is:

Area = Length x Width
Area = 120 ft x 90 ft

Now, let's calculate the total area:

Area = 10,800 square feet

Since each bag of seeds covers 600 square feet, we can find the number of bags needed by dividing the total area of Jessica's yard by the coverage area of each bag:

Number of bags = Total area / Coverage area per bag
Number of bags = 10,800 sq ft / 600 sq ft

Now, let's calculate the number of bags:

Number of bags = 18 bags

Therefore, Jessica will need 18 bags of grass seed to seed her backyard.