Solve the problem.Assume the total revenue from the sale of x items is given by 
while the total cost to produce x items is 
Find the approximate number of items that should be manufactured so that profit, 
is maximum.
A. 84 items
B. 11 items
C. 46 items
D. 65 items
Answer: A
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Write the polynomial in standard form. Then find its degree and leading coefficient.8 + 5x3 + 20x4
A. 20x4 + 5x3 + 8, degree: 7, leading coefficient: 20 B. 20x4 + 5x3 + 8, degree: 4, leading coefficient: 20 C. 8 + 5x3 + 20x4 , degree: 4, leading coefficient: 8 D. 8 + 5x3 + 20x4 , degree: 8, leading coefficient: 8
Determine if the series converges or diverges; if the series converges, find its sum.
A. Converges; 1
B. converges; 
C. Converges; e
D. Diverges
Determine if the sequence is arithmetic, geometric, or neither. If arithmetic or geometric, determine the first term and the common difference or common ratio.
A. Geometric; a = 
, r = 9
B. Arithmetic; a = 
, d = 9
C. Geometric; a = 9, d = 
D. neither arithmetic nor geometric
Solve the rational inequality. Write the solution set using interval notation; then graph the solution set on a number line.
? 0
A. (-?, -7) ? (3, 4)
B. (-?, -7] ? [3, 4)
C. [-7, 3] ? (4, ?)
D. [3, 4)