Solve the problem.John owns a hot dog stand. His profit, in dollars, is given by the equation 
where x is the number of hot dogs sold. What is the most he can earn?
A. $108
B. $150
C. $87
D. $49
Answer: A
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Solve.- 
s = - 
A. 2
B. - 2
C. - 
D. 
Find the derivative.f(x) = sin 4e2x
A. e2x cos 4e2x B. -8e2x cos 4e2x C. cos 4e2x D. 8e2x cos 4e2x
Find the center, foci, and vertices of the ellipse.3x2 + 4y2 - 42x + 56y + 331 = 0
A. 
+ 
= 1
center: (7, -7); foci: (8, -7), (6, -7); vertices: (9, -7), (5, -7)
B. 
+ 
= 1
center: (-7, 7); foci: (-6, 7), (-8, 7); vertices: (-9, 7), (-5, 7)
C. 
+ 
= 1
center: (7, -7); foci: (8, -7), (6, -7); vertices: (9, -7), (5, -7)
D. 
+ 
= 1
center: (-7, 7); foci: (-6, 7), (-8, 7); vertices: (-9, 7), (-5, 7)
Determine algebraically whether the graph is symmetric with respect to the x-axis, the y-axis, and the origin.y = (x + 3)(x - 3)
A. x-axis only B. x-axis, y-axis, origin C. y-axis only D. Origin only