Perform the indicated operation or operations.
A. - 
B. - 
C. - 
D. - 
Answer: C
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Solve the problem.A phone costs $85 and a battery recharger costs $34. What is the total price for purchasing these items if the sales tax rate is 7%?
A. $8.33 B. $119.00 C. $202.30 D. $127.33
Use the following information to solve the problem. An airport is located at point O. A short-range radar tower is located at point R. The maximum range at which the radar can detect a plane is 4 miles from point R.Assume that R is 8 miles east of O and 7 miles north of O. In other words, R is located at the point 
. An airplane is flying parallel to and 6 miles east of the north axis. (In other words, the plane is flying along the path 
.) What is the shortest distance north of the airport at which the plane can still be detected by the radar tower at R? Round your
answer to the nearest tenth of a mile. A. 16.8 miles B. 3.5 miles C. 17.5 miles D. 10.5 miles
Determine whether the statement is true or false.In the simplex method, a basic solution is infeasible if one of the slack variables is negative.
A. True B. False
Solve the problem.Suppose the consumption of electricity grows at 7.4% per year, compounded continuously. Find the number of years before the use of electricity has tripled. Round the answer to the nearest hundredth.
A. 40.54 yr B. 1.48 yr C. 0.15 yr D. 14.85 yr