Solve the problem.Dr. Smith can see 9 patients in 3 hours. At this rate, how long would it take him to see 18 patients?
A. 27 hours
B. 5 hours
C. 54 hours
D. 6 hours
Answer: D
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Solve the problem.In an electric instrument called a "Wheatstone bridge", electric resistances are related by 
Find R2 if 
and 
If necessary, round to two decimal places.
A. 34 ? B. 3.4 ? C. 0.03 ? D. 2.94 ?
Find the integral.
A. 1
-2 + C
B. 1
2 + C
C. 
2 + C
D. 
2 + C
Solve the problem. Round to the nearest cent.James has set up an ordinary annuity to save for his retirement in 19 years. If his monthly payments are 
and the annuity has an annual interest rate of 7.5% compounded monthly, what will be the value of the annuity when he retires?
A. $86,397.94 B. $75,347.04 C. $100,462.72 D. $104,462.72
Subtract the following complex numbers:
a. (9 + j2) - (-7 - j6) b. (6 - j6) - (8 - j2) c. (9 + j3) - (2 + j6) d. (j14) - (7 + j7)