The original price for a piece of machinery is $150,000. If the piece of machinery decreases in value by 22.5% each year, which
graph models the value of the piece of machinery after x years?

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?