The cost C (in millions of dollars) removing p% the industrial and municipal pollutants discharged into a river is given by
?
Select the correct graph of the cost function.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: E
Mathematics
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Provide an appropriate response. A stack of boards is 27 inches high and each board measures 3 inches thick. How many boards are in the stack?
A. 24 inches B. 9 inches C. 9 boards D. 24 boards
Mathematics
Identify the numbers from the given list that belong to the indicated set. 4, 
, -16, 0, 
, 
, 0.32, 0.
Rational numbers
A. 4, -16, 0, 
, 
, 0.32,
B. 4, -16, 0, 
, 0.32
C. 4, -16, 0, 
, 
, 0.32, 0.
D. 4, -16, 0, 
, 0.32, 0.
Mathematics
Change the decimal into a proper fraction or mixed number. Simplify if necessary. 1.01
A. 
B. 1
C. 
D. 
Mathematics
Find the line of symmetry.f(x) = 3x2 - 30x + 71
A. x = 4 B. x = -5 C. x = -4 D. x = 5
Mathematics