I think it would be (-y) to the power of -4. The exponents would add together to equal -4 while the y would just stay the same.
6pens cost=20p×6=120p
5pencils cost=12p×5=60p
total =6pens+5pencils
=120p+60p
=180p
⇒1rupee 80p
Answer:
Step-by-step explanation:
Given
The second fret is 
from the first fret.
The third fret is 
from the second fret.
Distance of third fret from the first fret 
Distance from first fret to second fret 
Distance from second fret to third fret.
Hence, we can see the third fret is from the first fret.
If he's studying 3/4 hours more everyday, for Friday it will be 1 + 6/8 = 1 and 3/4 hours or 1 hour and 45 minutes.
