Zarin is going to Paris, France for vacation. She plans to bring $250 cash with her. She needs to exchange her money into Euros €. If she exchanges her money in Canada at Scotia Bank before she leaves for Paris, the following exchange rate applies... CAD$1.00 = €0.7487 Euros If she exchanges her money when she arrives at the airport in Paris, France, the following exchange rate applies... €1.00 Euro = CAD$1.3394 (Canadian Dollars) Where should Zarin exchange her money to get the best value?​

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Acaterer knows he will need 60, 50, 80, 40 and 50 dinner napkins on five successive evenings. he can purchase new napkins initially at 25 cents each, after which he can have dirty napkins laundered by a fast one-day laundry service (i.e., dirty napkins given at the end of the day will be ready for use the following day) at 15 cents each, or by a slow two-day service at 8 cents each or both. the caterer wants to know how many napkins he should purchase initially and how many dirty napkins should be laundered by fast and slow service on each of the days in order to minimize his total costs. formulate the caterer’s problem as a linear program as follows (you must state any assumptions you make): a. define all variables clearly. how many are there? b. write out the constraints that must be satisfied, briefly explaining each. (do not simplify.) write out the objective function to be minimized. (do not simplify.)

If you were constructing a triangular frame, and you had wood in the length of 4inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no. explain your mathematical thinking