Give the appropriate form of the partial fraction decomposition.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
D. 
+ 
Answer: D
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Solve the problem.It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 70 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength?
A. 28 L B. 23.3 L C. 17.5 L D. 35 L
Use FOIL to multiply.(3x + 1)(3x - 1)
A. 9x2 - 6x - 1 B. 9x2 + 6x - 1 C. 9x2 - 1 D. 3x2 - 6x - 1
Simplify the following by combining like terms.3.8x3 - 6.5x + 11.4 + 1.9x - x3 - 8.1
A. 2.8x3 - 4.6x + 3.3 B. 1.5x4 C. 3.8x3 + 8.4x + 19.5 D. cannot be simplified
?A publishing company introduces a new weekly magazine that sells for $4.65 on the newsstand. The marketing group of the company estimates that sales x (in thousands) will be approximated by the following probability function. Find the expected revenue. Round your answer to the nearest dollar. ?? x 1015203040 P(x) 0.23 0.28 0.21 0.12 0.16?
A. ?$96,255 B. ?$96 C. ?$491 D. ?$20,700 E. ?$490,622