Provide an appropriate response.
Multiply: 2ab(3cd - 5ac - 7bd) =
A. 6abcd - 10a2bc + 14 ab2d
B. 6abcd - 10a2bc - 14 ab2d
C. 6abcd + 10a2bc + 14 ab2d
D. 6abcd + 10a2bc - 14 ab2d
Answer: D
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Solve the problem.A conical tank is resting on its apex. The height of the tank is 
, and the radius of its top is 
. The tank is full of gasoline weighing
How much work will it take to pump the gasoline to the top? Give your answer to the nearest ft ? lb.
A. 412,240 ft ? lb B. 137,413 ft ? lb C. 11,130,474 ft ? lb D. 15,268 ft ? lb
Round the decimal to the indicated place value.-19.783
hundredth
A. -20 B. -19.78 C. -19.780 D. -19.8
Solve the logarithmic equation.log4 (x - 5) + log4 (x - 5) = 1
A. -
, 
B. 7
C. 
D. -7, 7
Simplify the expression by dividing out common factors. If the expression cannot be simplified by dividing out common factors, so state.
A. x7 B. 8 C. x8 - x D. x9