Answer:
20 - 0.9u = 4.7
-0.9u = 4.7 - 20
-0.9u = -15.3
Divide both sides by - 0.9
u = 17
Hope this helps.
c is the right answer ok....
The rate would be: 4:20 and the unit rate would be 1:5.
Step-by-step explanation:
