Use the given graph of the quadratic function f to write its formula as 
.
A. f(x) = -(x + 3)2 - 4
B. f(x) = -(x - 3)2 + 4
C. f(x) = -(x + 3)2 + 4
D. f(x) = (x + 3)2 + 4
Answer: C
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The population ?N of a certain state today is 16.7 million people. The average rate of change for N is -0.16 million people per year. Use these facts to estimate the population of the state 6 years from now. ?
A. 16.7 million people B. 18.66 million people C. 15.74 million people D. none of the above
The histogram shows the scores of each participant in a game from a total of 100 participants. 
What is the ratio of participants who score 80-99 to the total number of participants?
A. 
B. 
C. 
D. 
Insert parentheses as needed in the expression in order to make it equal to 0. More than one set of parentheses may be needed.15 + 3 ? 2 - 7
A. 15 + 3 ? (2 - 7) B. (15 + 3) ? 2 - 7 C. 15 + (3 ? 2) - 7 D. 15 + 3 ? 2 - 7
Identify the conic section represented by the equation.4y2 - x2 - 12x + 6y - - 12 = 0
A. hyperbola B. parabola C. ellipse D. circle