Solve.The length ? of a metal rod used in manufacturing cars must not differ from the standard s by more than 0.7 inches. The manufacturing engineers express this as 
If the standard s is 20.7, solve the inequality for the length ?. Express the answer in set-builder notation.
A. { ? 
}
B. { ? 
}
C. { ? 
}
D. { ? 
}
Answer: B
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Evaluate the expression.
A. 7!
B. 7
C. 
D. 1
Graph.y2 - x2 - 4y + 6x - 41 = 0 
A. 
B. 
C. 
D. 
Solve the problem.A box with an open top is to be constructed from a rectangular piece of cardboard with dimensions 12 inches by 25 inches by cutting out equal squares of side x at each corner and then folding up the sides as in the figure. Express the volume V of the box as a function of x.
A. V(x) = x(12 - x)(25 - x) B. V(x) = x(12 - 2x)(25 - 2x) C. V(x) = (12 - 2x)(25 - 2x) D. V(x) = (12 - x)(25 - x)
Find two equivalent expressions for the opposite of the polynomial.x4 - 5x2 + 2x
A. -(x4 - 5x2 + 2x); x4 + 5x2 - 2x B. -(x4 - 5x2 + 2x); -x4 - 5x2 - 2x C. -(x4 - 5x2 + 2x); x4 - 5x2 + 2x D. -(x4 - 5x2 + 2x); -x4 + 5x2 - 2x