What is the purpose of file extensions?

The 2016 financial statements of the new york times company reveal average shareholders’ equity attributable to controlling interest of $837,283 thousand, net operating profit after tax of $48,032 thousand, net income attributable to the new york times company of $29,068 thousand, and average net operating assets of $354,414 thousand. the company's return on net operating assets (rnoa) for the year is: select one: a. 3.5% b. 6.9% c. 13.6% d. 18.7% e. there is not enough information to calculate the ratio.

while setting up his new office, an attorney ordered thick, frieze carpets for the floor. however, the building inspector had him remove the expensive carpeting. the building inspector stated that according to federal regulations, the office must be wheelchair accessible as it is a public area. he further explained that since wheelchairs do not maneuver well in thick, frieze carpeting, the carpets had to be removed and be replaced with smooth-textured carpets that do not restrict wheelchair maneuverability. this scenario illustrates how a company is influenced by the component of its specific environment.

Alarge tank is filled to capacity with 500 gallons of pure water. brine containing 2 pounds of salt per gallon is pumped into the tank at a rate of 5 gal/min. the well-mixed solution is pumped out at the same rate. find the number a(t) of pounds of salt in the tank at time t.