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Question 1195252: The greenback begins 2022 with a slight decrease of 0.56% against the Peruvian sol despite the political and economic crisis in our country, likewise the dollar closed 2021 close to its maximum of 18 years ago due to the effects of the coronavirus health crisis, which led to greater demand for dollars by investors. Complete information can be found at the following link: https://es.investing.com/currencies/usd-pen-historical-data Assuming that the relationship between the price of the dollar “y=f(x)” in soles and the days elapsed “x” gives rise to a linear function: f(x)=ax+b develop the following questions:
b) Write the linear function f(x) that describes "y=f(x)" in terms of "x". To do this, use the linear adjustment method of least squares, use only 10 data (10 consecutive days) and work only with the first 2 columns, consider x=1 the date 06/20/22.
c) Knowing the linear function f(x) obtained in the previous item, what would be the price of the dollar on July 11?
d) What would be the percentage change in the price of the dollar on 08/04/22 compared to 07/20/22?
Answer by nycmathdad(2)   (Show Source):
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