Complete the square. Then write the trinomial square in factored form.x2 + 20x
A. x2 + 20x + 100; 
2
B. x2 + 20x + 100; 
2
C. x2 + 20x; 
2
D. x2 + 20x + 400; 
2
Answer: A
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Use implicit differentiation to find dy/dx and d2y/dx2.x2 + y2 = 5, at the point (2, 1)
A. 
= - 2; 
= 1
B. 
= 2; 
= 5
C. 
= - 2; 
= -5
D. 
= - 
; 
= 0
Solve the following quadratic equation using the Square Root Property. Make sure you simplify the final answer completely. Find the exact answer and a decimal approximation to the nearest tenth when possible.3x2 = 4
A. x = 
or x = - 
; x ? 1.2 or x ? -1.2
B. x = 
; x ? 1.2
C. x = 
; x ? 1.2
D. x = 
or x = - 
; x ? 0.7 or x ? -0.7
Solve the problem.An arrow is fired into the air with an initial velocity of 128 feet per second. The height in feet of the arrow t seconds after it was shot into the air is given by the function 
Find the maximum height of the arrow.
A. 256 ft B. 768 ft C. 64 ft D. 448 ft
Find the composition. If f(x) = 6x + 6 and g(x) = x + 5, find (f ? g)(x)
A. 6x2 + 36x + 30 B. 6x + 11 C. 6x + 36 D. 6x2 + 36