You just add 15+18 and you get 33 then you add the negative.
ANSWER: -33
In the scenario above, the best method to use is A by the Addition of a chemical reagent to the pond to neutralize the pesticide. This chemical reagent removes the pesticide at the rate of 11 gal/hr.
<h3>What removes pesticides from water?</h3>
Pesticides can be removed from ponds water via chemical reagent through Chemical degradation and other ways.
Note that the first option is useful as the Addition of a chemical reagent to the pond to neutralize the pesticide because there are lot of chemical against that can eat up other chemicals that are harmful to the pond.
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First we need to know how many bracelets they make a minute. But it doesn't say here. But for example if they each make one bracelet in 2 minutes that is 60 bracelets. multiply the number of brackets with the time and you will find your answer.