Use the theorem on bounds to establish the best integral bounds for the roots of the equation.-5x4 - 8x2 + 1 = 0
A. -1 < x < 2
B. -1 < x < 1
C. -2 < x < 2
D. No bound can be determined.
Answer: B
Mathematics
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Add or subtract. Simplify your answer to lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics
Solve using the elimination method. 0.6x - 0.4y = -7-0.7x - 0.1y = 5.9
A. (4, -9) B. (-90, 40) C. (-0.9, 0.4) D. (-9, 4)
Mathematics
Write the expression as a complex number in the form a + bi.
+ 
A. -15 + 0i B. 0 + 56i C. 0 - 15i D. 0 + 15i
Mathematics
Suppose that a chain of auto service stations, Quick-Oil, Inc., has found that its monthly sales volumey(in thousands of dollars) is related to the pricep(in dollars) of an oil change by
variablename="impvar_6496fbb622844e5ea95ed8fe5" />. Is y increasing or decreasing for all values of 
?
A. increasing
B. decreasing
Mathematics