If the cost, C(x), for manufacturing x units of a certain product is given by C(x) = x2 - 12x+36 find the number of units manufactured at a cost of $8100.

21/58.

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(2,20) means that the 2 is 2 hours and 20 is 20$. so there both 20$ for 2 hours only the same price. like it says. so, the dunk tank and the bounce house are the same price (20$) for the same amount of time (2 hours).

hope i

i think it might be a but you might want a second opinion