Find the LCD of the list of fractions.- 
, - 
A. 19 + k
B. 19
C. -19k
D. 19k
Answer: D
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Evaluate.
A. 
B. 
C. 
D. 
Express in terms of a base raised to a positive exponent. Then simplify, if possible.(-5)-4
A. 625
B. -625
C. - 
D. 
Solve the linear programming problem.Two kinds of crated cargo, A and B, are to be shipped by truck. The weight and volume of each type are given in the following table: 
The shipping company charges $75 per crate for cargo A and $100 per crate for cargo B. The truck has a maximum load limit of 7,200 pounds and 1,000 cubic feet. How many of each type of cargo should be shipped to maximize profit for the shipping company?
A. 0 crates of cargo A and 20 crates of cargo B B. 20 crates of cargo A and 0 crates of cargo B C. 10 crates of cargo A and 18 crates of cargo B D. 18 crates of cargo A and 10 crates of cargo B
Find the first term a1 and the common difference d of the arithmetic sequence.an = 9 - 3n
A. a1 = 6, d = 9 B. a1 = 9, d = 3 C. a1 = -3, d = 6 D. a1 = 6, d = -3