In a triathlon, athletes swim 2.4 miles, then bike 112 miles, and finally run 26.2 miles. Jesse's average rates for each leg of a triathlon are shown in the table. Leg swim bike run Rate 4 mph 20 mph 6 mph a. Write a piecewise function to describe the distance D that Jesse has traveled in terms of time t. Round t to the nearest tenth, if necessary. b. State the domain of the function. 59 ELECTIONS Describe the set of presidential election years beginning in 1792 in interval notation or in set-builder notation. Explain your reasoning. 60. CONCESSIONS The number of students working the concession stands at a football game can be represented by f(x) = 5, where x is the number of tickets sold. 50 Describe the relevant domain of the function.