Factor completely. If the polynomial is prime, say so.x2 + 81
A. (x + 9)2
B. (x + 9)(x - 9)
C. (x - 9)2
D. Prime
Answer: D
Mathematics
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Solve the problem.The position of a particle moving along a coordinate line is s = 
, with s in meters and t in seconds. Find the particle's velocity at 
A. 
m/sec
B. - 
m/sec
C. 
m/sec
D. 
m/sec
Mathematics
The graph of the derivative 
(x) of a continuous function f is shown. On what intervals is f decreasing?
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Provide an appropriate response.Write "three hundred seven thousand, 
ninety-nine" in standard form.
A. 3,007,599 B. 37,599 C. 370,599 D. 307,599
Mathematics
Write the first four terms of the sequence.an = (-3)n+1
A. a1 = -3, a2 = 9, a3 = -27, a4 = 81 B. a1 = -9, a2 = 27, a3 = -81, a4 = 243 C. a1 = 3, a2 = -9, a3 = 27, a4 = -81 D. a1 = 9, a2 = -27, a3 = 81, a4 = -243
Mathematics