In 2011 a country's federal receipts (money taken in) totaled $2.10 trillion. in 2013, total federal receipts were $2.83 trillion. assume that the growth of federal receipts, f, can be modeled by an exponential function and use 2011 as the base year (tequals0). a) find the growth rate k to six decimal places, and write the exponential function f(t), for total receipts in trillions of dollars. b) estimate total federal receipts in 2015. c) when will total federal receipts be $10 trillion?

Inventory by three methods; cost of goods sold the units of an item available for sale during the year were as follows: jan. 1 inventory 20 units at $1,800 may 15 purchase 31 units at $1,950 aug. 7 purchase 13 units at $2,040 nov. 20 purchase 16 units at $2,100 there are 18 units of the item in the physical inventory at december 31. determine the cost of ending inventory and the cost of goods sold by three methods, presenting your answers in the following form: round your final answers to the nearest dollar. cost inventory method ending inventory cost of goods sold a. first-in, first-out method $ $ b. last-in, first-out method $ $ c. weighted average cost method $ $