Answer:
9
Step-by-step explanation:
This work is faster rate than grading 36 assignments in 30 minutes because :
25 ÷ 20 = 1.25
1.25 hw assignment per minute
36 ÷ 30 = 1.2
1.2 hw assignments per minute


solve for "a", once you get "a", plug it back into either equation to get "b"
Answer:
x=9
Step-by-step explanation:
Remove the radical by raising each side to the index of the radical.