Write the standard form of the equation of the circle described.Center (0, -7), r = 11
A. x2 + (y + 7)2 = 121
B. (x - 7)2 + y2 = 121
C. x2 + (y - 7)2 = 11
D. (x + 7)2 + y2 = 121
Answer: A
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Identify the equation without applying a rotation of axes.4x2 - 12xy + 4y2 + 4x - 2y - 5 = 0
A. ellipse B. parabola C. hyperbola D. not a conic
Solve.A projectile moves so that its position at any time t is given by the equations x = t2 and 
for t in [0, 5]. Graph the path of the projectile and find the equivalent rectangular equation. Use the window [0, 25] by [0, 30]. 
A. 
y = -16
+ 32
B. 
y = -16x + 32
C. 
y = -16
+ 28
D. 
y = -16x + 36
Establish the identity.(sec u - tan u)(sec u + tan u) = 1
What will be an ideal response?
You have a 24% silver alloy and some pure silver. How much of each must be mixed to obtain 100 oz of 43% silver? ?
A. 75 oz silver and 25 oz alloy B. 19 oz silver and 81 oz alloy C. 24 oz silver and 76 oz alloy D. 76 oz silver and 24 oz alloy E. 25 oz silver and 75 oz alloy