Solve the problem.Jane has invited 50 people to a party and expects 
to attend. Express the expected number of guests n as an inequality and graph the values of n.
n = number of guests
A. 15 ? n ? 20
n = number of guests
B. n ? 30
n = number of guests
C. n ? 35
n = number of guests
D. 30 ? n ? 35
n = number of guests
Answer: D
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Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.4x - y + 3z=12x + 4y + 6z=-325x + 3y + 9z=20
A. {(2, -7, -1)} B. {(8, -7, -2)} C. ? D. {(-8, -7, 9)}
Use sets to solve the problem.Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey. Results of the survey indicate that 8 students own a cat, 15 students own a dog, and 5 students own both a cat and a dog. How many of the students surveyed own no cats?
A. 27 B. 22 C. 15 D. 10
Find the missing numerator.
= 
A. 
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B. 
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C. 
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D. 
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Determine the order of the matrix.
A. 2 × 4 B. 4 × 2 C. 2 D. 8