Factor the expression completely, if possible.x2 - 169
A. (x + 13)2
B. (x + 13)(x - 13)
C. (x - 13)2
D. Does not factor
Answer: B
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Provide an appropriate answer.Find 
when u = 0 and v = 
if z(x, y) = sin x + cos y, x = u ? v, and y = u + v.
A. 
= 0
B. 
= 2
C. 
= 1
D. 
= -1
Solve the problem.If an object is thrown upward with an initial velocity of 12 ft per sec, then its height (in feet) is given by 
after time t seconds. What is its maximum height?
A. 144 ft B. 147 ft C. 36 ft D. 108 ft
Rewrite the quadratic equation in the form ax2 + bx + c = 0, then identify a, b, and c. 2x2 = 3x
A. a = 2, b = -3, c = 0 B. a = 2, b = -3 C. a = 2, b = 0, c = 3 D. a = 3, b = 3, c = 0
Find the radius of a circle with central angle ? intercepting an arc of length s.? = 2.5 radians, s = 20 in.
A. 7.7 in. B. 8 in. C. 50 in. D. 15.9 in.