(a) Calculate the average rates of change in I(x) = 0.6x 2 + 5.2x + 29 from...

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(a) Calculate the average rates of change in I(x) = 0.6x2 + 5.2x + 29 from 2015 to 2018 and from 2018 to 2020. 

(b) Interpret the average rate of change from 2015 to 2018. 

(c) Use your average rate of change from 2018 to 2020 to predict the global investment in 2022. Explain your answer. 

(d) Use I(x) to predict global investment in 2022.

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