Baxter washes the lawn every 3 days and mows it every 7 days. He both watered and mowed the lawn on july 2, when will he next water and mow on the same day?

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?