Find the indicated unit rate.In a region, the total number of students enrolled in public schools in a recent year was 426,593. At the same time, there were 23,312 public school teachers. Write a unit rate of students to teachers. Round to the nearest whole number.
A. 18 students for every teacher
B. 19 students for every teacher
C. 20 students for every teacher
D. 17 students for every teacher
Answer: A
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Solve the problem.Estimate the area of the surface generated by revolving the curve y = 2x2, 0 ? x ? 3 about the x-axis.Use Simpson's Rule with n = 6.
A. 1007.254 B. 1024.885 C. 1021.107 D. 996.028
Determine the coordinates of the focus and the equation of the directrix of the parabola.x2 = 12y
A. F(3, 0), x = 3 B. F(3, 0), y = 3 C. F(0, 3), y = -3 D. F(0, -3), x = - 3
Write the imaginary numbers using the letter i.
A. -11i
B. ±11
C. -i
D. 11i
An equation that defines y as a function of x is given. Rewrite the equation using function notation f(x).x + 3y = 4
A. f(x) = 
x + 
B. f(x) = 3x - 4
C. f(x) = -x + 
D. f(x) = - 
x + 