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On April 1st the Australian dollar was worth 0.61 US dollars, and on July 1st it...

  1. On April 1st the Australian dollar was worth 0.61 US dollars, and on July 1st it was worth 0.69 US dollars. In the following you must show working to demonstrate how your answers were calculated, a correct answer with no working is not sufficient to get the marks. (a) Determine the average rate of change of the value of the Australian dollar in US dollars per day over this time period. Give this answer correct to 6 decimal places.(b) If we assume a linear trend then predict the value of the Aus- tralian dollar on August 17th, correct to 2 decimal places.

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Soln let on spail : lt-o) Value, = 0.61 spaile to July + (t= 91 days) Valuey = T (0, 0.61) ( 91, 0.69) assume linear torend a

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