A manufacturer of lighting fixtures has daily production costs of $C = 800 - 80 x + 0.25 x ^ { 2 }$ where C is the total cost (in dollars)and x is the number of units produced.How many fixtures should be produced each day to yield a minimum cost? (Round your answer to two decimal places. )
?
A)160
B)106.67
C)320
D)400
E)800 ?

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The Answer of A manufacturer of lighting fixtures has daily production costs of $C = 800 - 80 x + 0.25 x ^ { 2 }$ where C is the total cost (in dollars)and x is the number of units produced.How many fixtures should be produced each day to yield a minimum cost? (Round your answer to two decimal places. )
?
A)160
B)106.67
C)320
D)400
E)800 ?

A Manufacturer of Lighting Fixtures Has Daily Production Costs Of C