Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.
> 0
A. x and y must be positive.
B. x and y have different signs.
C. x and y must be negative.
D. x and y have the same sign.
Answer: D
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Perform the indicated operation. Simplify if possible.
- 
A. 
B. 
C. 
D. 
Write the equation of the graph after the indicated transformation(s). The graph of y = 
is shifted 4 units to the right.
A. y = 
B. y = 
C. y = 
+ 4
D. y = 
- 4
Calculate the average rate of change of f on each interval. What happens to this average rate of change as the interval decreases in length?f(x) = -4x2 + 
x4
(i) [-2.1, -1.9] (ii) [-2.01, -1.99] (iii) [-2.001, -1.999]
A. (i) 0.04; (ii) 0.0004; (iii) 0.000004; approaches 0. B. (i) -0.04; (ii) -0.0004; (iii) -0.000004; approaches 0. C. (i) -79.1995; (ii) -799.92; (iii) -7999.992; approaches 0. D. (i) -7.92395; (ii) -7.99920400; (iii) -7.99999200; approaches -8.
Simplify.|-7| - |-13|
A. -20 B. -6 C. 6 D. 20