Solve the equation by completing the square.8x2 + 7x = -2
A. 
B. 
C. 
D. 
Answer: A
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Use a CAS integration utility to evaluate the triple integral of the given function over the specified solid region.
over the rectangular solid 
, 
, 
A. - 3840
B. - 
C. - 1280
D. - 640
Solve the problem.The voltage V (in volts) across a resistor in an electric circuit is the product of the resistance and the current. If the current I (in A) varies with time (in s) according to the relation 
and the resistance varies with time according to the relation 
find the time rate of change of the voltage when 
A. 68.46 volts/s B. -0.04 volts/s C. 3.84 volts/s D. 3.88 volts/s
Solve the problem.The strength S of a rectangular wooden beam is proportional to its width times the square of its depth. Find the dimensions of the strongest beam that can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 6.8; d = 7.2 B. w = 6.8; d = 9.2 C. w = 4.8; d = 9.2 D. w = 5.8; d = 8.2
Graph the function.f(x) = 
A. 
B. 
C. 
D. 