Solve the following System of Equations by either Substitution or Elimination (your choice). Place your answer in coordinate form. 3x−8y=−39
x+2y=15

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?