Simplify the expression by dividing out common factors. If the expression cannot be simplified by dividing out common factors, so state.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.The numbers on the right in the equations below are the hexagonal numbers. Use the sequence of equations to find a formula for hn, the nth hexagonal number. 1 = 1 1 + 5 = 6 1 + 5 + 9 = 15 1 + 5 + 9 + 13 = 28 ..............
A. hn = (n - 1)(2n + 1) B. hn = 2n(n - 1) C. hn = n(2n - 1) D. hn = n(2n + 1)
Provide an appropriate response.Add 
+ 
and reduce answers to lowest terms with improper fractions changed to whole or mixed numbers.
A. 
B. 
C. 
D. 
Solve the problem.A recipe contains 6 ingredients. In how many different orders can all of the ingredients be added?
A. 720 B. 5040 C. 6 D. 120
Solve the problem.Suppose a business can sell x gadgets for p = 250 - 0.01x dollars apiece, and it costs the business 
dollars to produce the x gadgets. Determine the production level and cost per gadget required to maximize profit.
A. 111 gadgets at $248.89 each B. 13,750 gadgets at $112.50 each C. 10,000 gadgets at $150.00 each D. 11,250 gadgets at $137.50 each