Evaluate the integral.
A. -4i - 
j - 8k
B. -4i - 
j + 8k
C. -4i + 
j + 8k
D. +4i + 
j + 8k
Answer: B
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Solve the problem.Junior high classes of 25 students each met in the cafeteria to take achievement tests. If exactly 8 students sat at each table and 25 tables were used, how many classes took the tests?
A. 10 classes B. 8 classes C. 11 classes D. 21 classes
Multiply and simplify.
? 
A. 
B. x + 4
C. 
D. x - 4
Find an equation of the line passing through the two points. Write the equation in standard form.(3, -4) and (0, 3)
A. -7x + 3y = 9 B. -7x + 3y = -9 C. 7x - 3y = -9 D. 7x + 3y = 9
Solve the problem.A rectangular box with volume 371 cubic feet is built with a square base and top. The cost is $1.50 per square foot for the top and the bottom and $2.00 per square foot for the sides. Let x represent the length of a side of the base. Express the cost of the box as a function of x. Give the function and state its domain.
A. C(x) = 2x2 + 
Domain: {x| x < 10}
B. C(x) = 3x2 + 
Domain: {x| x > 0}
C. C(x) = 4x + 
Domain: {x| x > 0}
D. C(x) = 3x2 + 
Domain: {x| x > 4}