If the cost, C(x), for manufacturing x units of a certain product is given by

C(x)=x2-9x+64

find the number of units manufactured at a cost of $8600.

The number of units is

If the cost, C(x), for manufacturing x units of a certain product is given by

C(x)=x2-9x+64

find the number of units manufactured at a cost of $8600.

The number of units is