Simplify the expression. Assume all variables represent positive real numbers.
A. not a real number
B. -2
C. ±2
D. 4
Answer: B
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Solve the problem.Find the equation of the tangent to the parabola y2 = -3x at the point (-3, -3).
A. y = 
x - 3
B. y = 
x - 
C. y = - 
x - 3
D. y = - 
x - 
The scores on a 30-point multiple-choice exam are given in the following frequency table:
The first quartile on the exam is
A. 25. B. 24.5. C. 24. D. 25.5. E. none of these
Choose the sketch that has the indicated slope.m = 
A. 
B. 
C. 
D. 
Solve the problem.The function f(x) = x3 describes the volume of a cube, f(x), in cubic inches, whose length, width, and height each measure x inches. Find the instantaneous rate of change of the volume with respect to x when x = 4 inches.
A. 49.21 cubic inches per inch B. 12 cubic inches per inch C. 192 cubic inches per inch D. 48 cubic inches per inch