Write the pair of rational expressions in terms of their LCD. and 

A.  and 
B.  and 
C.  and 
D.  and 


Answer: D

Mathematics

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Solve.A rectangular box with volume 468 cubic feet is built with a square base and top. The cost is $1.50 per square foot for the top and the bottom and $2.00 per square foot for the sides. Let x represent the length of a side of the base in feet. Express the cost of the box as a function of x and then graph this function. From the graph find the value of x, to the nearest hundredth of a foot, which will minimize the cost of the box.

A. 8.55 feet B. 8.63 feet C. 7.92 feet D. 8.44 feet

Mathematics

Solve the problem.The price p and the quantity x sold of a certain product obey the demand equation p = - x + 180, 0 ? x ? 540.What quantity x maximizes revenue? What is the maximum revenue?

A. 405; $18,225 B. 270; $24,300 C. 540; $24,300 D. 135; $18,225

Mathematics

Solve the equation and check your solution.9 +  = 6

A. -18 B. -6 C. 6 D. 18

Mathematics

Determine the number of ways a computer can randomly generate the integer that is divisible by 3 from 1 through 42.

A. 18 B. 12 C. 10 D. 16 E. 14

Mathematics