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
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Solve the problem.The voltage E in an electrical circuit is given by E = 1.5 cos 90?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).
A. 45
B. 
C. 90
D. 
Solve. Remember to insert units when writing your answer.A gas tank contains 23.5 L of gasoline. To top it off, 1546 ml of gasoline were added to it. Find the total amount of gasoline in the tank.
A. 25,046 L B. 25.046 L C. 38.96 L D. 2504.6 L
Find the equation in standard form of the parabola described.The focus has coordinates (2, 0), and the equation of the directrix is x = -2.
A. y2 = 8x B. y2 = 2x C. x2 = 8y D. y2 = -8x
Find an equation for the line with the given properties.Vertical line; containing the point (-8, 8)
A. x = -8 B. y = 8 C. y = -8 D. x = 8