The interval of convergence of the power series in the previous problem is
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. 
Answer: E
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Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. no solution; ? B. {(0, 0)} C. {(-1, 1)} D. {(-1, -1)}
Solve the problem.A plane flying the 3057-mile trip from City A to City B has a 30-mph tailwind. The flight's point of no return is the point at which the flight time required to return to City A is the same as the time required to continue to City B. If the speed of the plane in still air is 430 mph, how far from City A is the point of no return? Round your answer to the nearest mile.
A. 2986 miles B. 1529 miles C. 1422 miles D. 1635 miles
Match the description with the correct graph.A decreasing line that is nearly vertical.
A. 
B. 
C. 
D. 
Find the real solutions, if any, of the equation. Use the quadratic formula.5x2 + 7x - 6 = 0
A. 
B. 
C. 
D. 