Solve the system of equations using Cramer's Rule, if applicable.
A. (1, -2)
B. (2, 1)
C. (1, 2)
D. ?
Answer: C
Mathematics
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Provide an appropriate response. How many cubic feet of pea gravel are in a conical pile of gravel that has a height of 45 feet and a diameter of 30 feet.
A. 10,602.9 ft3 B. 5,301.4 ft3 C. 21,205.8 ft3 D. 42,411 ft3
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Answer the question.With the exponential function f(x) = ax, why must a ? 1?
What will be an ideal response?
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Determine the vertex of the graph of the parabola.y = x2 + 9
A. (0,-9) B. (-9, 0) C. (0, 9) D. (9, 0)
Mathematics
Solve the problem.32° Fahrenheit = 0° Celsius. A function that converts temperatures in Fahrenheit to those in Celsius is 
Fahrenheit. Find a formula for the inverse of the function described.
A. f-1(x) = 
x - 32
B. f-1(x) = 
(x - 32)
C. f-1(x) = x + 32
D. f-1(x) = 
x + 32
Mathematics