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)
Answer: C
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Find the center (h, k) and radius r of the circle. Graph the circle.x2 + y2 + 2x + 2y - 23 = 0
A. Center (1, 1), r = 5
B. Center (-1, 1), r = 5
C. Center (1, -1), r = 5
D. Center (-1, -1), r = 5
Use factoring by grouping to solve the equation.2x3 + 8x2 - 8x - 32 = 0
A. -8, -4, 4 B. -4, -2, 1 C. -2, 2, 4 D. -4, -2, 2
For the given functions f and g, find the composition.f(x) = 7x2 + 5x; g(x) = 2x
Find (f ? g)(x).
A. 28x2 + 10x B. 14x2 + 10x C. 7x2 + 7 D. 14x3 + 10x2
Fill in the digits for the given place values in the following whole number.8,352,642,148billions: millions:
A. Billions: 2, millions: 5 B. Billions: 3, millions: 2 C. Billions: 8, millions: 2 D. Billions: 2, millions: 6