Answer:
He can grade 1.25 assignments in 1 minute.
Step-by-step explanation:
Because the teacher can grade 25 assignments in 20 minutes, we can dive 25 by 20 to get the constant rate.

So he can grade 1.25 assignments in 1 minute.
-3x4.5=13.5. 4.5x0.5=2.25
-13.50
+2.25
_____
15.75 pints
Answer:
Y=0.35x+18.99
Step-by-step explanation:
Y = total cost
X = number of letters
Answer: 150 degrees
Step-by-step explanation: