Combine like terms.-9y3 + 6y3
A. 3y3
B. 3y6
C. -3y6
D. -3y3
Answer: D
Mathematics
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Perform the operation indicated.(-8.8) - (-6.1)
A. -2.7 B. 2.7 C. 14.9 D. -14.9
Mathematics
Use transformations of the graph of y = x4 or y = x5 to graph the function.f(x) = - 
x5 
A. 
B. 
C. 
D. 
Mathematics
Solve.When a low-pressure system moved through an area, the barometer dropped 12 millibars in three hours. Using a signed number, find the average drop per hour.
A. -36 millibars per hour B. +36 millibars per hour C. -4 millibars per hour D. +4 millibars per hour
Mathematics
Solve the equation.6(2x + 3) = 2(5x + 9)
A. -18 B. 0 C. 2 D. 18
Mathematics