Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Answer: D
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Graph the solution set of the inequality or system of inequalities.2x + 5y > -1
A. 
B. 
C. 
D. 
Solve the problem.Since life expectancy has increased in the last century, the number of Alzheimer's patients has increased dramatically. The number of patients in the United States reached 4 million in 2000. Using data collected since 2000, it has been found that the data can be modeled by the exponential function 
where x is the years since 2000. Estimate the Alzheimer's patients in 2025. Round to the nearest tenth.
A. 3.9 million B. 4.8 million C. 8.0 million D. 7.8 million
Add or subtract as indicated. Express the answer as a single polynomial in standard form.-6(1 - y3) - 9(1 + y + y2 + y3)
A. -3y3 + 9y2 - 9y + 15 B. -3y3 - 9y2 - 9y - 15 C. 3y3 - 9y2 - 9y - 15 D. -3y3 - 9 - ay2 - 9y - 15
Write the complex number in rectangular form.4 cis 135°
A. 4
+ 2i
B. -2
+ 2i
C. 4
- 2i
D. 2
- 2i