Need Help? airport in England went to a banking window at the airport and gave t

Question

Need Help? airport in England went to a banking window at the airport and gave the teller 83 American dollars. She received 31 British pounds in exchange. In this exercise, assume there is no service charge for exchanging currency (a) What is the rate of change, or slope, of P with respect to D? (Note: You need two values to calculate slope, but you were given only one. If you think about it, you know the other value. How many British pounds can you get for zero American dolars? Round your answer to five decimal places) pounds per dollar Explain in practical terms what this number means. pound. (b) A few days later, the American tourist went to a bank in Plymouth and exchanged 150 American dollars for British pounds. How many pounds did she receive? Round your answer to two decimal places.) (c) Upon retuming to the airport, she found that she still had E11.80 in British currency in her purse. In preparation for the trip home, she exchanged that for American dollars. How much money, in American dollans, did she get? (Round your answer to two decimal places.) Show My Work (otons

Explanation / Answer

since there is no service charge

the line passes through (0,0) or

P= m D

31 = m *83

m = 31/83 = 0.373493 pound per dollar

each dollar is worth 0.373493 pound

b)

150 dollar = 150 *0.373493 pound

= 56.024096 pound

c) 11.80 pound = 11.80 /0.373493 = 31.593630 dollar

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