-3/12 - 20/12 is equivalent to -1/4 - 5/3
1 orange. Cuz 2 divided by 2 is 1
If the moving object is undergoing constant acceleration, then

(take the average of the initial and final velocities, if they're given)
If you don't know the acceleration or initial/final velocities, then you have to resort to the usual definition,

where
is the change in position and
is the duration of the interval.
Answer:
1 / 4= 25%
Step-by-step explanation:
The percent of graduates in the sample had an income under $20,000
= Posibility of had an income under $20,000 / total posible outcomes
= 75 / 300
= 1 / 4= 25%
Hope this helped :3