Identify the open intervals where the function is changing as requested.Decreasing
A. (-3, 0)
B. (-?, -3), (0, 3)
C. (-3, 0), (3, ?)
D. (-3, 3)
Answer: C
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Solve the problem. Write your answer as a mixed number when possible.A biology experiment required pouring 
gallon of nutrient solution and 
gallon of pure water into a tank. At the end of the experiment, 
gallon of fluid had evaporated. How much fluid remained in the tank?
A. 
gallon(s)
B. 4 gallons(s)
C. 
gallon(s)
D. 
gallon(s)
Set up the percent proportion for the application problem. Do not try to solve for any unknowns.There are 120 quarts of grape juice in a vat holding a total of 3000 quarts of fruit juice. What percent is grape juice?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Determine the cube of the expression by writing the expression as the square of an expression multiplied by another expression.(x + 3y)3
A. 3(x + 3y) B. x3 + 27y3 C. x3 + 9x2y + 27xy2 + 27y3 D. x3 + 3x2y + 6xy + 9xy2 + 18y2 + 27y3
Use Cramer's rule to find the solution of the system, if possible.
a. x = 2, y = -2
b. x = 5, y = -12
c. The system is inconsistent.
d. The equations are dependent.