Multiply.3(15)
A. 15
B. 8
C. 45
D. 30
Answer: C
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Solve the equation 
for ?y. Round your answers to two decimal places, if necessary.
?
A. 
or 
B. 
or 
C. 
or 
D. None of the above.
Solve the problem. x + 2y - z = 6 3x + 2y + z = 10(x + 2y)2 - z2 = 12
A. {(4, 0, -2)} B. {(5, 0, -3)} C. {(4, 0, -3)} D. {(5, 0, -2)}
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)) = 27a2 + 18a + 14 B. P(s(a)) = 9a2 + 12a + 6 C. P(s(a)) = 9a + 4 D. P(s(a)) = 27a2 + 36a + 14
Use basic identities to simplify the expression.
A. cos3? B. sin ? C. tan2? D. sec2?