Use words such as linear, quadratic, cubic, polynomial, degree, one variable, and two variables to describe the expression.6a2b2 + 6ab2 - 4ab
A. fourth-degree polynomial in two variables
B. sixth-degree polynomial in two variables
C. cubic polynomial in three variables
D. cubic polynomial in two variables
Answer: A
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Solve the differential equation.y' + 2xy = 19x
A. y = 19 + Cex2
B. y = 
+ Cex2
C. y = 
+ 2x + Ce-x2
D. y = 
+ Ce-x2
If 
represents the cumulative number of flu cases reported by day ?t, what units are associated with the average rate of change for F with respect to ?t?
What will be an ideal response?
Perform the indicated operations and express your answer in the form a + bi. 
A. 8i
B. i
C. ±8
D. -8i
Solve the problem.The locations of three receiving stations and the distances to the epicenter of an earthquake are contained in the following three equations: 
. Determine the location of the epicenter.
A. at (-4, -6) B. at (-4, -5) C. at (-5, -5) D. at (-6, -3)