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Mathematics 7 Online
OpenStudy (anonymous):

Guys i need help! A computer can sort x objects in t seconds, as modeled by the function below: t=0.007x²+0.003x How many objects are required to keep the computer busy for exactly 9 seconds? Round to the nearest whole object.

OpenStudy (anonymous):

put t = 9 9 = 0.007x^2 + 0.003x 0.007x^2 + 0.003x - 9 = 0 solve this for x - use the quadratic formula

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