Use the fundamental identities to find the value of the trigonometric function.Given that tan 
= -0.4, find cot ?.
A. 2.5
B. -2.5
C. 0.4
D. -0.4
Answer: C
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Find an equation that meets the given conditions.y varies directly as x and y = 5 when x = 
A. y = 
x
B. y = x + 
C. y = 15x
D. y = 
x
Determine whether the given ordered pair is a solution to the given system of equations.(4, -6); 
A.
| Yes |
B. No
Subtract.97 - 42
A. 65 B. 139 C. 55 D. 51
Solve the problem.An economy has three sectors: labor, transportation, and food industries. Suppose the demand on 1 dollar in labor is 35 cents for transportation and 15 cents for food, the demand on 1 dollar in transportation is 55 cents for labor and 27 cents for transportation, and the demand on 1 dollar in food production is 55 cents for labor, 5 cents for transportation, and 33 cents for food. Outside consumer demand for the current production period is 12,000 dollars for labor, 21,000 dollars for transportation, and 12,000 dollars for food. Write an augmented matrix for this economy.
A. 
B. 
C. 
D. 