Solve the system of equations by substitution.
x + 
y = 32
x - 
y = 40
A. (-100, -27)
B. (-100, 27)
C. (100, 27)
D. (100, -27)
Answer: D
Mathematics
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Use the graph of a known basic function and a combination of transformations to sketch the function.f(x) = -2(x + 1)2 - 4
A. 
B. 
C. 
D. 
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Find the common ratio.3, -9, 27, -81, 243, . . .
A. 3
B. - 
C. -3
D. -12
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Solve the problem.Find a polynomial that represents the volume of the cube.
A. 24x2 + 96x + 96 B. 8x3 + 48x2 + 96x + 64 C. 8x3 + 64 D. 8x3 + 192x + 64
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Solve the problem.In a chemistry class, 9 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 9.0 L B. 3.5 L C. 5.5 L D. 4.5 L
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