The table shows the mid-year populations (in millions) of Wakanda in 2020 and the projected populations (in millions) for the year 2030. Country 2020 2030
Wakanda 6.3 8.6Find the exponential growth model y=aebt for the population of Wakanda by letting t=20 corresponding to 2020.
Approximate the result to three decimal places.

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

Consider the function y = f(x)=3^x the values of f(1/2) and f(1/4). rounded to the nearest hundredth, are__and__ respectively

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.