For the function represented in the graph, determine the domain or range, as requested.Find the domain.
A. {-5, -4, -3, -2, -1, 0, 1, 2, 3}
B. {x? -2 ? x ? 2}
C. {-4, -3, -2, -1, 0, 1, 2, 3}
D. {x? -4 ? x ? 4}
Answer: C
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Solve the problem.The stiffness of a rectangular beam is proportional to its width times the cube of its depth. Find the dimensions of the stiffest beam than can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 7.0 in.; d = 11.4 in. B. w = 5.0 in.; d = 11.4 in. C. w = 6.0 in.; d = 10.4 in. D. w = 7.0 in.; d = 9.4 in.
Find a formula for the function graphed.
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
State the domain of the rational expression.
A. {x|x ? 9, x ? -7}
B. {x|x ? -9, x ? -7}
C. {x|x ? 9, x ? -7, x ? 
, x ? 0}
D. {x|x ? 9, x ? -7, x ? 
}
Perform the indicated operations. Round the result to the nearest thousandth if necessary.
A. 5.5 B. 550 C. 2.426 D. 55