I need help doing these calculations. I dont really know how to

Value of N-P-K from Fertilizer Nutrient Rate X lbs of Fertilizer 100 Pounds Table 2 Fertilizer Rate Calculations (in square footage) Fertilizer Analysis Size of Area Fertilizer Applied (kg) Nutrient Rate Area (m) 10' x 100' parking strip 1 lb. of N per 1000 sqft. 16-8-4 50' x 80' lawn 2 lbs. of N per 1000 sqft 16-16-16 75' x 125 playground 1 lb. of N per 1000 sqft 20-10-20 150' x 360 football field 3 lbs. of N per 1000 sqft. 46-0-0 Some helpful formulas: Value of N from Fertilizer X lbs. of N 100 Pounds lbs of Fertilizer Price per unit of fertilizer = Cost of N/Ib. Lbs. of N/Unit of Fertilizer Table 5 Price Comparisons of Fertilizers Your Product Price for Choice A Product A N Cost/lb. Product A Produc tB Price for Product B N Cost/lb. Product B 1 A or B 46-0-0 $278/ton 46-0-0 $7.50/50 lb bag 2 A or B 32-8-8 $6.75/50 lb bag 45-8-12 $6.99/ 50 lb bag 3 Sewage Sludge A or B $20/ton $45/ton Cattle Manure 4 A or B 16-16-16 $3.85/50 lb bag $30/ton Broiler Manure Show the formula and the steps you used to solve the problems in Table 5: Value of N-P-K from Fertilizer Nutrient Rate X lbs of Fertilizer 100 Pounds Table 2 Fertilizer Rate Calculations (in square footage) Fertilizer Analysis Size of Area Fertilizer Applied (kg) Nutrient Rate Area (m) 10' x 100' parking strip 1 lb. of N per 1000 sqft. 16-8-4 50' x 80' lawn 2 lbs. of N per 1000 sqft 16-16-16 75' x 125 playground 1 lb. of N per 1000 sqft 20-10-20 150' x 360 football field 3 lbs. of N per 1000 sqft. 46-0-0 Some helpful formulas: Value of N from Fertilizer X lbs. of N 100 Pounds lbs of Fertilizer Price per unit of fertilizer = Cost of N/Ib. Lbs. of N/Unit of Fertilizer Table 5 Price Comparisons of Fertilizers Your Product Price for Choice A Product A N Cost/lb. Product A Produc tB Price for Product B N Cost/lb. Product B 1 A or B 46-0-0 $278/ton 46-0-0 $7.50/50 lb bag 2 A or B 32-8-8 $6.75/50 lb bag 45-8-12 $6.99/ 50 lb bag 3 Sewage Sludge A or B $20/ton $45/ton Cattle Manure 4 A or B 16-16-16 $3.85/50 lb bag $30/ton Broiler Manure Show the formula and the steps you used to solve the problems in Table 5