How much principal must be deposited to earn $2,000.00 simple interest in 4 years at a rate of 1.3%? Round to the nearest cent. SHOW THE WORK PLEASE ​

Martha is training for a duathlon, which includes biking and running. she knows that yesterday she covered a total distance of over 55.5 miles in more than than 4.5 hours of training. martha runs at a speed of 6 mph and bikes at a rate of 15.5 mph.