A school board has determined that there should be 3 teachers for every 50 students. How many teachers are needed for an enrollment of 2,750 students?
A. 190 teachers
B. 176 teachers
C. 165 teachers
D. 181 teachers
E. 222 teachers
Answer: C
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Tell whether the given rational expression is proper or improper.
A. Improper B. Proper
Solve the problem.The accompanying graph shows the average number of degrees above/below normal in December from 2000-2009 where x = 0 represents 2000. 
Estimate the number of degrees above zero in 2004. Round to the nearest tenth.
A. 5 degrees above normal B. 141 degrees above normal C. 32 degrees above normal D. 1.3 degrees above normal
Solve the linear inequality. Express the solution using set-builder notation and interval notation. Graph the solution set.6x - 5 > 5x - 11
A. {x|x ? -6}; [-6, ?)
B. {x|x > -16}; (-16, ?)
C. {x|x < -6}; (-?, -6]
D. {x|x > -6}; (-6, ?)
Find the gradient field of the function.f(x, y, z) = x8y4 + 
A. ?f = (8x7 + 6x5)i + 4y3j - 
k
B. ?f = 8x7y4i + 4x8y3j - 
k
C. ?f = (8x7 + 6x5)i + 4y3j + 
k
D. ?f = 
i + 4x8y3j - 
k