Answer:
y=3x
Step-by-step explanation:
Energy from 1 bottle last 7.5 min
1 glass cost = 2.5 $
Since it cost 5$ for 1 kg and the bottle weight 1/2 kg
6*60 =360 min ( is in 6 hours)
2.5/? =7.5/360
? = 120 $
The height of the plant it 63 yards 5 inches and 5
Unit rate means how much does it cost for 1 unit
140 for 18ft^2
divide by 18
140/18=7.77777777777777
so the unit rate is $7.78 per square foot