Emma is going to seed grass in her front yard. the yard is 45 feet long by 27 feet wide. her options at the seed store are: 1 bag of 4 lb of seeds costs $5 and covers 500 square feet of area 1 bag of 2 lb of seeds costs $2 and covers 170 square feet of area if the lawn requires one layer of seeds, what is the minimum cost of seeding the grass in emma's lawn?