Find the following. Assume that the letter can represent any real number.
A. 
- 7
B. 
- 7
C. (z - 7)2
D. 
Answer: D
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Find an equation for the ellipse described.Center at (-2, 5); focus at (-6, 5); contains the point (-7, 5)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the problem.Suppose that the speed of a car, measured in miles per hour (mph), is monitored for some short period of time after the driver applies the brakes. The following table relates the speed of the car to the amount of time, measured in seconds (sec), elapsed from the moment that the brakes are applied. Make a scatterplot of the data. What is happening to the speed of the car during this time frame?
A. The speed of the car
increased as time elapsed.
B. The speed of the car
decreased as time elapsed.
C. The speed of the car
decreased as time elapsed.
D. The speed of the car
increased as time elapsed.
Find any relative extrema.f(x, y) = x2 + y2
A. No relative extrema B. f(0, 0) = 0, relative maximum C. f(1, 1) = 2, relative maximum D. f(0, 0) = 0, relative minimum
For the following expressions perform the indicated operations and simplify. Write the answers in 
form.
A. 
B. 
C. 
D. 
E. None of these