A 1500-liter tank contains 70 liters of a 30% acid solution and you add x liters of a 70% acid solution to the tank. If the function C, which represents the proportion of acid to the total solution in the final mixture, is given by 
, determine the domain based upon the physical constraints of the problem.
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
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The following table shows the distance, in feet, that a rock travels t seconds after it is thrown downward.
0510152025
0480.251760.53840.75672110401.25?
Make a new table of values showing the average rate of change in distance over each five-second period.
What will be an ideal response?
Mathematics
Graph the system of inequalities.2x - y ? 2x + 4y ? 4
A. 
B. 
C. 
D. 
Mathematics
Graph the inequality.(x - 3)2 + (y - 5)2 > 4
A. 
B. 
C. 
D. 
Mathematics
Evaluate  FIGURE.png)
yz dy + xy dz, where C is given by x = 10?t , y = 3t, z = 10t², 0 ? t ? 1. Round your answer to two decimal place.
 multiple choice.png)
Mathematics