Answer:
C, D, E
Step-by-step explanation:
To find the unit rate, divide the first value by the second one
After doing this, only answer choices C, D, and E have a unit rate of 40.
120/3 = 40
480/12 = 40
80/2 = 40
So, the answer is C, D, and E
ADEF
2 : 5
4/10 = 8.6/21.5 = 10/25 because all ratios equal 2/5
Y=-9
W=9
2y/6+3=0
-3=-3
6/1 *2y/6=-3*6/1
2y=-18
2y/2=-18/2
The rest of the work is in the pic
-15
3x+5=BD
4x+20=AE
3x+5 = 4x+20
subtract 3x from 4x = 1x = x
subtract 20 from 5 = -15
-15=x
i got:
n = -1 + 3/x
x = 3/n + 1
not sure if this helps but i hope it does somehow