For the given geometric sequence, find the limit of the infinite series, if it exists. 24, 12, 6, 3, . . .
A. 48
B. - 24
C. 24
D. 42
Answer: A
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Solve the problem.Jane wants to buy a photocopier. The salesman has the following information on 3 models. If all 3 are used, a specific job can be done in 50 minutes. If copier A operates for 20 minutes and copier B for 50 minutes, one-half the job is finished. If copier B operates for 30 minutes and copier C for 80 minutes, three-fifths of the job is done. Which is the fastest copier, and how long does it take for this copier to finish the whole job?
A. B is fastest; 100 min B. C is fastest; 120 min C. C is fastest; 100 min D. A is fastest; 120 min
Solve.The gravitational attraction between two masses varies inversely as the square of the distance between them. If the force of attraction is 2.25 lb when the masses are 4 ft apart, what is the attraction when the masses are 6 ft apart?
A. 2 pounds B. 3 pounds C. 4 pounds D. 1 pound
Subtract.(8y3 + 5y5 - 8 - 2y4) - (-3 + 5y4 + 2y5 + 2y3)
A. 7y5 + 3y4 + 10y3 - 5 B. 7y5 + 3y4 + 10y3 - 11 C. 3y5 - 7y4 + 6y3 - 5 D. 3y5 + 3y4 + 10y3 - 11
Find an equation of an ellipse satisfying the given conditions.Foci: (0,-4) and (0, 4) ; length of major axis: 14
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 