Find the radius of convergence of the power series.
A. 2
B. ?
C. 0
D. 1
Answer: D
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Solve.An express and local train leave GraysLake at 3 P.M. and head for Chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of the local. Find the speed of each train.
A. Express's rate = 60 mph and local's rate = 30 mph. B. Express's rate = 50 mph and local's rate = 25 mph. C. Express's rate = 25 mph and local's rate = 12.5 mph. D. Cannot be determined with information given.
The function f is one-to-one. Find its inverse.f(x) = 2x + 4
A. f(x) = 
B. f-1(x) = 
C. f-1(x) = - 
D. f-1(x) = 
Simplify by using the order of operations. Round your answer to the nearest hundredth, if necessary.56 - 4.4 ? (0.76 + 4) - 1.22
A. 33.62 B. 247.06 C. 36.50 D. 244.18
Use substitution to factor the trinomial.6x4 + 17x2 + 12
A. (3x2 - 4)(2x2 - 3) B. (2x2 + 1)(3x2 + 12) C. (6x2 + 3)(x2 + 4) D. (2x2 + 3)(3x2 + 4)