Solve the problem.A man earned $2500 the first year he worked. If he received a raise of $500 at the end of each year, what was his salary during the 15th year?
A. $7000
B. $10,000
C. $2500
D. $9500
Answer: D
Mathematics
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Rationalize the denominator. Assume that all variables represent positive real numbers and that the denominator is not zero.
A. 
B. 
C. 
D. 
Mathematics
Write an inequality that satisfies the description.Inside the ellipse with x-intercepts ±5 and y-intercepts ±6.
A. 
+ 
> 1
B. 
- 
< 1
C. 
+ 
< 1
D. 
+ 
< 1
Mathematics
Find percent notation.
A. 400% B. 40% C. 4% D. 0.4%
Mathematics
Solve the problem. Round your answer to the nearest tenth, if necessary.Two pipes together can fill a large tank in 10 hr. One of the pipes, used alone, takes 15 hr longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 10 hr; 25 hr B. 15 hr; 30 hr C. 25 hr; 40 hr D. 12.5 hr; 27.5 hr
Mathematics