Determine the number that should be added to complete the square of the expression. Then factor the expression.x2 + 8x
A. -16; (x + 4)2
B. 16; (x + 4)2
C. -16; (x - 4)2
D. 16; (x - 4)2
Answer: B
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Solve the problem.The velocity field F of a fluid has a constant magnitude k and always points towards the origin. Following the smooth curve y = f(x) from (a, f(a)) to (b, f(b)), show that the flow along the curve is 
ds = k[(a2 + (f(a))2)1/2 - (b2 + (f(b))2)1/2]
What will be an ideal response?
Solve the problem.It has been observed in one country, that 59 out of every 100 births is a baby with brown eyes. In 660 births how many brown eyed babies would you expect?
A. 389 B. 330 C. 59 D. 384
Find the circumference of the circle with the given radius or diameter.d = 5.6 in.
A. 17.6 in. B. 35.2 in. C. 18 in. D. 35 in.
Graph the quadratic equations.y = 
x2
A. 
B. 
C. 
D. 