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The Cost of Manufacturing Clocks Is Given By C(x)=72+62x−x2C ( x ) = 72 + 62 x - x ^ { 2 }

Question 57

Multiple Choice

The cost of manufacturing clocks is given by C(x) =72+62x−x2C ( x ) = 72 + 62 x - x ^ { 2 } . Also, it is known that in thours the number of clocks that can be produced is given by x=9t , where 1≤t≤121 \leq t \leq 12 Express C as a function of t .


A) C(t) =72+62t-9
B) C(t) =72+558t-81t2
C) C(t) =72+62t+t2
D) C(t) =72+558t-81t

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