6.21 as mixed number in simplest form

Find |−5|. a. −5 b. 5 c. one-fifth d. –one-fifth !

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?

What’s the answer? and how do i solve it ?