Please help for first brainllest and i will thank him and rate him 5 FAST CALCULATE THE LAST 4 ROWS I DONT KNOW HOW OK

Using the formula MA = load/effort

From left to right,

1st case : MA = load/effort = 5/5 = 1

2nd case: MA = load/effort = 5/2.5 = 2

3rd case: MA = load/effort = 5/1.67 = 3

4th case: MA = load/effort = 5/1.25 = 4

Hope this helps!

:)

18a

step-by-step explanation:

simply because it is. it's the highest common factor