Use the vertex formula to find the vertex of the quadratic function.f(x) = -7x2 + 14x + 2
A. (1, 9)
B. (2, -12)
C. (-1, -19)
D. (-2, -54)
Answer: A
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Find the absolute maximum and minimum values of the function on the given curve.Function: 
curve: 
(Use the parametric equations 
style="vertical-align: -4.0px;" />
A. Absolute maximum: 
at 
absolute minimum: 0 at 
and 
B. Absolute maximum: 
at 
absolute minimum: 0 at 
and 
C. Absolute maximum: 
at 
absolute minimum: 0 at 
and 
D. Absolute maximum: 
at 
absolute minimum: 0 at 
and 
Solve the problem.Let f(x,y) = ln (x2 + y2). Which one of the following curves is a simple closed path in the domain of the function f?
A. The unit circle x2 + y2 = 1
B. The unit circle (x - 5)2 + y2 = 1
C. The ellipse 
+ 
= 1
D. The rectangle with vertices at (-3, 2), (3, 2), (3, -2), and (-3, -2)
Find the intercepts for the graph of the equation.-4x + 3y = 0
A. (0, 0); (0, 0) B. (0, -8); (-2, 0) C. (0, -2); (0, -8) D. (-2, 0); (-8, 0)
Solve the problem.In a town whose population is 2000, a disease creates an epidemic. The number N of people infected t days after the disease has begun is given by the function, N(t) = 
. Find the number infected after 8 days.
A. 1514 B. 1515 C. 1512 D. 1510