Determine the degree of the polynomial.11x3 - 9y2 + 12xy2 + 17x2y + 13x4
A. 4
B. 13
C. 17
D. -9
Answer: A
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The life expectancy E, in solar lifetimes, of certain stars depends on their mass M, in solar masses. The relationship is
.
As mass increases, life expectancy decreases. What can you say about the rate of decrease? A graph of E versus M can help you answer this question.
?
A. Life expectancy decreases at a decreasing rate. B. Life expectancy decreases at an increasing rate. C. Life expectancy reaches a point of inflection. D. None of the above.
Complete the table.
A. 
B. 
C. 
D. 
Multiply or divide and simplify your answer.1
? 7
A. 9
B. 13
C. 10
D. 7
Find the vertex, focus, and directrix of the parabola. Graph the equation.x2 - 8x = 8y - 56
A. vertex: (4, 5)
focus: (4, 7)
directrix: y = 3
B. vertex: (4, 5)
focus: (6, 5)
directrix: x = 2
C. vertex: (4, 5)
focus: (4, 3)
directrix: y = 7
D. vertex: (4, 5)
focus: (2, 5)
directrix: x = 6