Answer:
The lowest he can get is a 72 to maintain an 80 as his average
Step-by-step explanation:
Answer:628384729
One two three
4-4x=12+16x
−4x+4=16x+12
−4+4−4=16+12−4
-4x=16x+8
-4x-16x=16x+8-16x
-20x=8
-20x/-20 = 8/-20
x= -2/5