Perform the indicated operations.8
- 
A. 8
B. 7
C. 0
D. 7
Answer: B
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Find the standard-form equation of the ellipse centered at the origin and satisfying the given conditions.An ellipse having a focus at (
, 0) and directrix x = 
.
A. 
+ y2 = 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Let x represent the number. Use the given conditions to write an equation. Solve the equation and find the number.The graph shows the number of people in Country A without health insurance from year 0 through year 3. 
In year 0, there were 23 million people in Country A without health insurance. This number has increased at an average rate of 4.3 million people per year. In what year will the number of people without health insurance in Country A exceed the number in year 3 by 30.1 million?
A. year 9 B. year 12 C. year 11 D. year 10
Evaluate the square root.(
)2
A. 2
B. -5.1
C. 
D. 5.1
Solve the problem.You have 84 feet of fencing to enclose a rectangular region. What is the maximum area?
A. 437 ft2 B. 7056 ft2 C. 1764 ft2 D. 441 ft2