Use a finite approximation to estimate the area under the graph of the given function on the stated interval as instructed.f(x) = x2 between x = 0 and x = 1 using the "midpoint rule" with two rectangles of equal width.
A. .3145
B. .125
C. .75
D. .625
Answer: A
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = -x2 - y2
A. 
B. 
C. 
D. 
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Simplify the expression. Assume that all variables are positive when they appear.
A. 147x
B. 7
C. 7x
D. 3x2
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Write the expression as one term. Evaluate if possible.log 18 - log 6
A. 12 B. 3 C. log 3 D. log 12
Mathematics
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 films in a school of 350 students?
A. About 20 students B. About 63 students C. About 42 students D. About 70 students
Mathematics