Group Activities 1. Suppose that the poster below has been translated from a sign in a...
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Group Activities 1. Suppose that the poster below has been translated from a sign in a San Francisco Chinese pharmacy where they exchange Chinese Yuan for U.S. dollars. a. C. b. Do you think that the pharmacy is charging a fee for exchanging money? How do you know? If a fee is being charged, how much is it in dollars? One rate only for one and all! Bet exchange rate in the city! 50 100 150 200 250 300 Dollars 1.25 7.5 13.75 20 26.25 32.5 Yuan a. What is the fixed exchange rate offered by the pharmacy? How do you know? 2. PG&E calculates your electrical bill based on the number of "kilowatt hours" (Kwh) of electricity you use. If you use more than a specified baseline quantity of Kwh you are charged a higher rate for the usage that exceeds the baseline. One month a local household was billed $44.88 for 408 kilowatt hours. The next month the same household was billed $56.32 for 512 Kwh. In both months the usage did not exceed the baseline. What is this household being charged per kilowatt hour? How do you know? C. Find an equation that models the data in the table. Define your variables. b. Does PG&E seem to be charging a flat fee in addition to the charge per Kwh of usage? How do you know? Find an equation to model the cost of electricity. Define your variables. 83 Group Activities 1. Suppose that the poster below has been translated from a sign in a San Francisco Chinese pharmacy where they exchange Chinese Yuan for U.S. dollars. a. C. b. Do you think that the pharmacy is charging a fee for exchanging money? How do you know? If a fee is being charged, how much is it in dollars? One rate only for one and all! Bet exchange rate in the city! 50 100 150 200 250 300 Dollars 1.25 7.5 13.75 20 26.25 32.5 Yuan a. What is the fixed exchange rate offered by the pharmacy? How do you know? 2. PG&E calculates your electrical bill based on the number of "kilowatt hours" (Kwh) of electricity you use. If you use more than a specified baseline quantity of Kwh you are charged a higher rate for the usage that exceeds the baseline. One month a local household was billed $44.88 for 408 kilowatt hours. The next month the same household was billed $56.32 for 512 Kwh. In both months the usage did not exceed the baseline. What is this household being charged per kilowatt hour? How do you know? C. Find an equation that models the data in the table. Define your variables. b. Does PG&E seem to be charging a flat fee in addition to the charge per Kwh of usage? How do you know? Find an equation to model the cost of electricity. Define your variables. 83
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1 a For every increase of so yuan exchange in to the US dollars 75125 625 137575 625 Then soyuan exc... View the full answer
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6th edition
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