Solve.A company produced 42,000,000 tons of steel last year. How many pounds of steel was this?

A. 21,000,000,000 lb
B. 84,000,000 lb
C. 21,000 lb
D. 84,000,000,000 lb


Answer: D

Mathematics

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Solve the equation. 

A. x = 9 B. x = -6 C. x = 3 D. x = 6 E. x = 13

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Solve the problem.If the price (in dollars) of a product is given by P(x) =  + 1200, where x represents the demand for the product, find the rate of change of price when the demand is 8 units.

A. -$128/unit B. -$16/unit C. $128/unit D. $16/unit

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