Evaluate the function.If f(x) = -2x - 1, find f(7).
A. 15
B. 6
C. -15
D. -14
Answer: C
Mathematics
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Find the eccentricity of the hyperbola.8x2 - 9y2 = 72
A. 
B. 
C. 
D. 
Mathematics
Decide whether the statement is true or false.The circle with equation (x + 4)2 + (y - 4)2 = 64 has center at (4, -4).
A. True B. False
Mathematics
Solve the absolute value inequality. Write your answer in interval notation. 
? 7
A. ?
B. 
C. 
D. 
? 
Mathematics
Find the reference angle of the given angle.-57°
A. 123° B. 33° C. 57° D. 147°
Mathematics