Answer the question(s) based on the following situation: For a population of 2000 students taking the SAT math exam, the scores on the exam have an approximately normal distribution with mean ? = 590 and standard deviation ? = 70.The third quartile of the scores on the exam is approximately
A. 660.
B. 607.
C. 637.
D. 543.
E. none of these
Answer: C
Mathematics
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Graph each system of inequalities and shade the portion of the graph represented by the solution set..
A. 
B. 
C. 
D. 
Mathematics
Write the equation of the line passing through the given points. Write your answer in slope-intercept form.Passing through (-9, -9) and (-2, 1)
A. x = -9
B. y = -8x - 81
C. y = 
x + 21
D. y = 
x + 
Mathematics
Is the algebraic expression a polynomial? If it is, write the polynomial in standard form.x2 + x4 - x3 - 3
A. Yes; x4 - x3 + x2 - 3 B. No
Mathematics
Solve the equation by completing the square.x2 + 4x + 40 = 0
A. {4, -8} B. {-2 ± 6i} C. {-2 ± 36i} D. {-2 + 6i}
Mathematics