at a store 6 pounds of seed cost 157.38.if a farmer needed 5 pounds of seeds how much would it cost him?

Could somebody me with this radical simplification?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer