Use the circle graph to solve the problem.In a school survey, students showed these preferences for instructional materials. 
About how many students would you expect to prefer TV in a school of 500 students?
A. About 60 students
B. About 100 students
C. About 12 students
D. About 90 students
Answer: A
Mathematics
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Solve the system using the graphing method. -3x - 3y = -6 18x + 18y = 36 
A. {(6, 6)}
B. {(-6, -6)}
C. Infinite number of solutions
D. ?
Mathematics
Solve for y.7x + 9 = 5y - 9
A. y = 
B. y = 
C. y = 7x - 18
D. y = 7x + 18
Mathematics
Graph the equation.x2 - 8xy + y2 + 25 = 0
A. 
B. 
C. 
D. 
Mathematics
Use the given trigonometric function value of ? to find the requested trigonometric function value of the acute angle ?. Rationalize the denominators where necessary.sec ? = 10 
Find cos ?.
A. - 
B. 
C. 
D. - 
Mathematics