Determine which of the following expressions are equivalent. Show your work.
(1.) 1/6(x-3) (2.) 1/4x - 3/5 - 1/12x + 1/10
(3.) 1/18x + 1/9x - 1/2

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?