Solve the problem.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 20 L
B. 25 L
C. 16.7 L
D. 12.5 L
Answer: D
Mathematics
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For the function f whose graph is given, determine the limit.Find
f(x).
A. 1.3 B. 4 C. 5 D. -1
Mathematics
Fill in the blank with one of the words or phrases listed below. Not all choices will be used and some choices may be used more than once.
The expression a3 - b3 is called a 
.
A. difference of two squares B. sum of two cubes C. perfect square trinomial D. difference of two cubes
Mathematics
Provide an appropriate response.Determine if the expression 8-3 is positive or negative.
A. Negative B. Positive
Mathematics
Find the approximate change in z when the point 
changes from 
to 
.
?
; from 
to 
?
A. -0.004
B. ?0.002
C. ?-0.04
D. ?0.004
E. ?-0.008
Mathematics