Use the laws of exponents to simplify each expression using positive exponents only. Assume all variables represent nonzero real numbers.x9 ? x6
A. 15x
B. x15
C. x54
D. 54x
Answer: B
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Subtract.(-3x4 + 6x6 + 6 - 6x5) - (-3 + 2x5 + 4x6 - 5x4)
A. 10x6 - 4x5 - 8x4 + 9 B. 2x6 - 4x5 - 8x4 + 3 C. 10x6 - 4x5 - 8x4 + 3 D. 2x6 - 8x5 + 2x4 + 9
Solve the problem.The population P of a predator mammal depends upon the number x of a smaller animal that is its primary food source. The population s of the smaller animal depends upon the amount a of a certain plant that is its primary food source. If 
and 
what is the relationship between the predator mammal and the plant food source?
A. P(s(a)) = 9a2 + 12a + 9 B. P(s(a)) = 36a2 + 24a + 21 C. P(s(a)) = 12a + 7 D. P(s(a)) = 36a2 + 48a + 21
Graph the solution set of the system of inequalities or indicate that the system has no solution.
A. 
B. 
C. 
D. 
Find the numerical value of the rational expression for the given value of x.
, x = -4
A. - 
B. - 
C. 
D. - 