Find the limit, if it exists.
3
A. Does not exist
B. 1000
C. 1331
D. ?
Answer: C
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Solve the problem.Suppose that the total-cost function for a certain company to produce x units of a product is given by 
Graph the average cost function A(x) = C(x)/x.
A. 
B. 
C. 
D. 
Solve the problem.Robert has built a mechanical model solar system with three balls representing planets at the ends of rods attached to the center representing the sun. The planets are aligned when he turns on the motor. The innermost planet makes a revolution in 12 seconds, the middle planet makes a revolution in 20 seconds, and the outermost planet makes a revolution in 28 seconds. After how many seconds will the planets be aligned again?
A. 210 seconds B. 630 seconds C. 420 seconds D. 840 seconds
Perform the division. Write the answer with positive exponents.
A. 3x3 + 25x11 - 40x9 + 25x7 + 7x6
B. 15x12 + 5x2 - 8 + 
+ 
C. 3x3 + 5x2 - 8
D. 3x3 + 5x2 - 8 + 
+ 
Round the number to the nearest thousandth, nearest hundredth, and nearest tenth. Remember to round from the original number.0.1167
A. 0.1167, 0.116, 0.11 B. 0.117, 0.12, 0.1 C. 0.117, 0.11, 0.2 D. 0.116, 0.11, 0.1