Factor the sum or difference of two cubes.729y3 + 1000
A. (9y - 10)(81y2 + 90y + 100)
B. (9y + 10)(81y2 - 90y + 100)
C. (9y + 10)(81y2 + 90y + 100)
D. (729y - 10)(y2 + 90y + 100)
Answer: B
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Plot a slope field for the differential equation. Plot the particular solution of the differential equation that satisfies the given initial condition.y' = x - y; y(0) = 2
A. 
B. 
C. 
D. 
Use the method of variation of parameters to solve the differential equation.3
+ 140
+ 225y = -10e3x
A. y = C1e-45x + C2e-5x/3 + 
e3x
B. y = C1e-45x + C2e-5x/3 - 
e3x
C. y = C1e-45x + C2e-5x/3 - 
e3x
D. y = C1e-45x + C2e5x/3 - 
e3x
Solve the problem.The five sales people at Southwest Appliances earned commissions last year of $19,000, $35,000, $41,000, $13,000, and $34,000. Find the average commission.
A. $31,240 B. $29,820 C. $28,400 D. $26,980
Write the first three terms of the expansion.(3x + 2y)7
A. 2187x7y + 10,206x6y2 + 20,412x5y3 B. 2187x7 + 10,206x6y + 20,412x5y2 C. 7x7y + 6x6y2 + 5x5y3 D. 7x7 + 6x6y + 5x5y2