Solve the system algebraically.8x + 8y = 67x + 7y = 14
A. (1, 1)
B. no solution
C. (7, 7)
D. (0, 0)
Answer: B
Mathematics
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Solve.Amy teaches Chinese lessons for $85 per student for a 6-week session. From one group of students, she collects $2040. Find how many students are in the group.
A. 28 students B. 26 students C. 24 students D. 14 students
Mathematics
Determine the amplitude and range of the function and sketch its graph.y = 4 cos 3?x
A. amplitude: 4; range: [0, 4]
B. amplitude: 3?; range: (-?, ?)
C. amplitude: 4; range: [-4, 4]
D. amplitude: 4; range: [-4, 4]
Mathematics
Answer the question about the given function.Given the function f(x) = 3x2 - 6x + 7, what is the domain of f?
A. all real numbers B. {x|x ?1} C. {x|x ? -1} D. {x|x ? 1}
Mathematics
Determine whether the function is continuous.
Mathematics