What is the domain of the function graphed below. Please help ASAP. Thank you

Josephine has a great garden with and area of 2x2 + x - 6 square feet

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

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?