Solve the problem.Junior high classes of 30 students each met in the cafeteria to take achievement tests. If exactly 6 students sat at each table and 25 tables were used, how many classes took the tests?
A. 18 classes
B. 8 classes
C. 5 classes
D. 7 classes
Answer: C
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Write an equation that expresses the relationship. Use k as the constant of variation.x varies jointly as m and the square of n.
A. x =kmkn2
B. x = 
C. x = 
D. x = kmn2
Evaluate using the order of operations.
A. 18 B. -10 C. 10 D. -18
Find the function that satisfies dE dt = kE . List the answer 
What will be an ideal response?
Solve the problem.For some reason the quality of production decreases as the year progresses at a light bulb manufacturing plant. The following data represent the percentage of defective light bulbs produced at a light bulb manufacturing plant in the corresponding month of the year. 
Use the equation of the least squares line to predict in which month the percentage of defective light bulbs would be 1.83%.
A. March B. May C. April D. February