1,2,3,4,6,12
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
<span>15 silver keys,
5 black keys,
11 copper keys,
4 painted
35 total
15 + 11 = 26
26/35 = 0.7428 </span>≈ 74.28% probability
Since they lose three yards on the first play, we can write -3 for the start. Next, since they gain six, we add 6 to get -3+6= net yards
It means that it does not equal to that certain amount, which is why they put a line across it