The value of the leading coefficient, a, is 
. Write the equation of the quadratic function with vertex 
.
A. 
B. 
C. 
D. 
E. None of these
Answer: B
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Plot and interpret the appropriate scatter diagram.The table gives the times spent watching TV and the grades of several students. 
Effect of Watching TV on Grades 
A. Effect of Watching TV on Grades
More hours spent watching TV may
reduce grades.
B. Effect of Watching TV on Grades
More hours spent watching TV may
reduce grades.
C. Effect of Watching TV on Grades
More hours spent watching TV may
increase grades.
D. Effect of Watching TV on Grades
More hours spent watching TV may
increase grades.
Find the reciprocal of the number or algebraic fraction.
A. 
B. 
C. 
D. 
Use Cramer's rule to solve the system of equations. If D = 0, use another method to determine the solution set. x - y + 4z = 143x + z = 4 x + 5y + z = 14
A. Cramer's rule does not apply since D = 0; ? B. {(4, 2, 0)} C. {(0, 2, 4)} D. {(4, 0, 2)}
Solve the problem.A magazine earned $87 million in 1998 from advertising revenue and subscriptions. If the advertising revenue was 8 times the subscription revenue, how much did the magazine earn from advertising?
A. $0.9 million B. $154.7 million C. $9.7 million D. $77.3 million