to determine the product
multiplication
With a rough estimation.
The desire, ability, and willingness to buy a product
Optimal product mix is at that point where net profit from thesales of that product mix is maximum.
The reactants in the equation determine what product you get.
Count them.
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The word "determine" means "find" or "work out" as in: Determine the product of 2 and 6. It can also mean to "settle" - put and end to.
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Acetylene
The sellers will determine how much they want the product to cost to make it worth producing. Buyers will determine how much they will spend on the product.