Which ratio can be used to form a proportion with the given ratio?
7 to 12
a.
8 to 13
b.
10 to 15
c.
14 to 19
d.
21 to 36

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?