Solve the problem.The cost of manufacturing clocks is given by 
where c is the total cost and n is the number produced. What is c when no clocks are produced?
A. $100
B. $4
C. $20
D. $10
Answer: C
Mathematics
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Use the integral test to determine whether the series converges.
A. converges B. diverges
Mathematics
Find the standard-form equation of the hyperbola centered at the origin which satisfies the given conditions.Foci at (-5, 0), (5, 0); asymptotes: y = 
x, y = - 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Use the appropriate formula to find the indicated figurate number.the 6th pentagonal number
A. P6 = 51 B. P6 = 57 C. P6 = 36 D. P6 = 21
Mathematics
Find the directrices of the ellipse.9x2 + 4y2 = 36
A. y = ± 
B. y = ± 
C. x = ± 
D. x = ± 
Mathematics