Determine if the graph of the function opens upward or downward and whether it has a maximum or a minimum point.f(x) = 2 - 4x + 9x2
A. Upward, minimum
B. Downward, maximum
C. Downward, minimum
D. Upward, maximum
Answer: A
Mathematics
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Write the slope-intercept form of the equation for the line passing through the given pair of points.
and 
A. y = 
x
B. y = - 
x
C. y = 
x + 
D. y = 
x - 
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Graph the polar equation.r = 5
A. 
B. 
C. 
D. 
Mathematics
Determine whether or not the function is one-to-one.
A. No B. Yes
Mathematics
Use a calculator to find the approximate value of the expression rounded to two decimal places.cos 4
A. 0.65 B. 1.00 C. -0.65 D. -1.00
Mathematics