Show that the equation is not an identity by listing the value(s) of the variable from among 0, ?/4, ?/2, and - ?/4 for which the equation is false.(tan ? + 1)2 = sec2 ?
A. 
, 
, and 0
B. 
, 
, and - 
C. 
and - 
D. 
and 0
Answer: B
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Perform the indicated operation.-23 + (-4)
A. -19 B. -27 C. 19 D. 27
Solve the problem.The following directed graph shows how rumors spread among six neighbors: Carl, Dennis, Tammy, Wade, Sandra, and Florence. Which neighbor(s) could start a rumor that could eventually spread to all the others? 
A. Florence, Tammy, Wade, and Sandra B. Dennis C. All neighbors D. Carl
Use the pattern in the sequence or chart to find the missing number.7, -28, 112, -448, 1792, 
A. 3136 B. -7168 C. -3136 D. 7168
Solve the problem. POLLUTION 
Years since 1990Use the ordered pairs (1, 12.81), (4, 17.76), and (8, 16.24) to find a quadratic function that models the data. Round the values of a, b, and c to two decimal places.
A. y = 3.10x2 - 0.29x + 10.00 B. y = 0.29x2 + 3.10x + 10.00 C. y = -3.1x2 - 0.29x + 10.00 D. y = -0.29x2 + 3.10x + 10.00