Find the interval of convergence of the series.
A. 4 < x < 6
B. 4 ? x < 6
C. x < 6
D. -? < x < ?
Answer: B
Mathematics
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Rewrite without rational exponents, and simplify, if possible.x1/8
A. x-8
B. 
C. 
D. 
Mathematics
Expand, where i2 = -1.
4
A. 1 - i B. -1 C. 1 D. 1 + i
Mathematics
Simplify the expression by combining like terms.5b + 2a + 3c + 3b - 4a
A. 8a - 2b + 3c B. -2a + 8b C. 6a + 8b + 3c D. -2a + 8b + 3c
Mathematics
Solve the problem. Round to the nearest tenth, if necessary.If an object is propelled upward from a height of 80 feet at an initial velocity of 64 feet per second, then its height after t seconds is given by the equation 
, where h is in feet. After how many seconds will the object reach a height of 144 feet?
A. 1 sec B. 4 sec C. 8 sec D. 2 sec
Mathematics