Find the exact value of the expression.cos
A. 
B. 
C. 
D. 
Answer: D
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For the given function, find the indicated function value.For f(x) = 
, find f(-1).
A. 
B. 3
C. 2
D. Does not exist as a real number
Select the smaller of the two given numbers.18, ?-30?
A. ?-30? B. 18
Solve the problem.A breed of cattle needs at least 10 protein and 8 fat units per day. Feed type I provides 6 protein and 2 fat units at $4 per bag. Feed type II provides 2 protein and 3 fat units at $3 per bag. What mixture of Feed type I and Feed type II will fill the dietary needs at minimum cost?
A. 0 bags of Feed type I, 5 bags of Feed type II B. 1 bag of Feed type I, 1 bag of Feed type II C. 1 bag of Feed type I, 2 bags of Feed type II D. 4 bags of Feed type I, 0 bags of Feed type II
Solve the system of equations by elimination.4x + 42y = 428x - 6y = -6
A. (1, 0) B. (0, 1) C. (1, 1) D. (0, 0)