Perform the indicated operation.(2n5 + 11n3 + 12) - (4n5 + 7n3 - 5)
A. -2n5 + 4n3 + 7
B. -2n5 + 15n3 + 7
C. 19n8
D. -2n5 + 4n3 + 17
Answer: D
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Find the measure of the unknown angle of the triangle.Find the measure of ?V.
A. 37° B. 140° C. 53° D. 93°
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)) = 9a + 10 B. P(s(a)) = 27a2 + 90a + 80 C. P(s(a)) = 9a2 + 30a + 30 D. P(s(a)) = 27a2 + 45a + 80
Simplify.-6x(-4x7 + 2)
A. 24x8 + 2 B. 24x7 - 12 C. 24x8 - 12x D. 24x7 - 12x
Pivot once about the circled element in the simplex tableau, and read the solution from the result. 
A. x3 = 14, s2 = -6, s3 = 4, z = 42; x1, x2, s1 = 0 B. x3 = 14, s2 = 12, s3 = -4, z = 42; x1, x2, s1 = 0 C. x3 = 14, s2 = -12, s3 = 4, z = -42; x1, x2, s1 = 0 D. x3 = 14, s2 = 12, s3 = 4, z = 42; x1, x2, s1 = 0