Solve the problem.During the first four months of the year, Jack earned 
and 
If Jack must have an average salary of at least 
in order to earn retirement benefits, what must Jack earn in the fifth month in order to qualify for benefits?
A. at least $1470
B. at most $1190
C. at least $1134
D. at most $1120
Answer: A
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Solve the problem.How long will it take for the population of a certain country to double if its annual growth rate is 2.2%? (Round to the nearest year.)
A. 14 years B. 32 years C. 1 year D. 91 years
Find the vertices and foci of the ellipse.196x2 + 49y2 = 9604
A. Vertices: (±14, 0); Foci: (±7
, 0)
B. Vertices: (±7, 0); Foci: (±7
, 0)
C. Vertices: (0, ±14); Foci: (0, ±7
)
D. Vertices: (0, ±7); Foci: (0, ±7
)
Construct a bar graph of the given frequency distribution.The frequency distribution indicates the height in feet of persons in a group of 216 people. 
A. 
B. 
C. 
D. 
Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(
- 5i)(
+ 5i)
A. 39 B. 14 - 25i C. 19 D. 14 + 25i