Decide whether the graph of the equation opens up, down, to the left, or to the right; and whether it is wider, narrower, or the same shape as the graph of 
(or 
).f(x) = -2x2 + 4x + 9
A. Down; narrower
B. Up; wider
C. Down; wider
D. Up; narrower
Answer: A
Mathematics
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Give the value of the indicated trigonometric function of a vector with the indicated end point.(6, 8); Find cos ?.
A. 
B. 
C. 
D. 
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Write the ratio as a fraction in lowest terms. Be sure to make all necessary conversions.9
days to 2
weeks
A. 
B. 
C. 
D. 
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Solve the equation.2(x + 5) = 5 - 4(x + 5)
A. 
B. - 
C. 
D. 25
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