How much formula should you add to spray 50 gallons of a pesticide if the label indicates 3 pounds of formula per 100 gallons of water?

To determine the correct amount of pesticide formulation needed for 50 gallons of water, we start by using the label's stated rate of 3 pounds per 100 gallons. This rate gives us a direct proportional relationship between the volume of water and the quantity of pesticide.

First, we can set up the relationship in terms of pounds per gallon:

• 3 pounds per 100 gallons translates to ( \frac{3 \text{ pounds}}{100 \text{ gallons}} = 0.03 \text{ pounds per gallon} ).

Next, to find out how much is needed for 50 gallons, we multiply the rate per gallon by the desired volume:

• ( 0.03 \text{ pounds per gallon} \times 50 \text{ gallons} = 1.5 \text{ pounds} ).

Thus, to achieve the correct concentration of pesticide in 50 gallons of water, you need to add 1.5 pounds of the formula. This calculation confirms that the right answer is indeed the option that states 1.5 pounds.