Determine the degree of the polynomial.-a + 9a3 - 4a7 + 3a2
A. 4
B. 7
C. 12
D. 13
Answer: B
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Solve the problem. Round to the nearest dollar.Central Street bought a rolling machine that cost $58,000. The expected life is 600,000 hours of production with a salvage value of $5,800. Find the book value at the end of the third year. Use the units-of-production method of depreciation given the following production schedule.Year 1135,000 hoursYear 2129,000 hoursYear 3121,000 hours
A. $17,550 B. $20,783 C. $34,650 D. $23,350
Write interval notation.{ x ? -6 < x < -2 }
A. (-6, -2) B. [-6, -2] C. [-6, -2) D. (-6, -2]
For what value of a does the equation 
represent a circle with center 
? When a assumes this value, what is the radius of the circle?
?
A. 
, 
B. ?
, 
C. ?
, 
D. ?
, 
E. ?
, 
Solve the equation by completing the square.-x2 + 2x = -2
A. {1 + 
, 1 - 
}
B. {1, 3}
C. 
D. {-1 + 
, -1 - 
}