Solve the problem.An office desk costs $6000. After 3 years, it depreciates to a value of $5100 Assuming linear depreciation, answer the following.a) Write a linear equation that gives the value of the desk, y, in terms of the number of years after it was purchased, x.b) Using the equation found in part a, find the value of the desk after 7 years.c) After how many years would the desk have no value?
A. y = 6000 - 200x; $3900; 20 years
B. y = 6000 + 300x; $8100; 20 years
C. y = 6000 - 300x; $3900; 20 years
D. y = 6000 - 300x; $2100; 20 years
Answer: C
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Simplify the complex rational expression using Method 1.
A. 
B. 
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D. 
Find the standard equation of the parabola that satisfies the given conditions. Vertex: (0, -4); focus: (0, -6)
A. x2 = -8(y + 4) B. (y + 4)2 = -8x C. (x + 4)2 = -8y D. y2 = -8(x + 4)
Given a group of students: 
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count the different ways of choosing the following officers or representatives for student congress. Assume that no one can hold more than one office.A treasurer and a secretary if the two must not be the same sex
A. 10 B. 3 C. 12 D. 6