The population of Ukraine is decreasing every year in 2016 this population was 45 millions. A mathematical model proposes the function f such that f(t) = 45e^(-0.04t) to evaluate this population (in millions) t years after 2016 . 1) Build an array of values of f for t integer between 0 and 10. 2)Graph f. Based on this mathematical model determined smaller integer value such that Ukraine sees its population halve. I have no problem with question 1 but I will need the correction of question 2 please, thank you