Answer:
-2.333333333
Step-by-step explanation:
£110 as 45mins times 4 radiators divided by 60 mins =3 hours
3 hours + 1 hour = 4 hours
4 hours times £20= £80
£80+£30=£110
Answer:
No
Step-by-step explanation:
No it is not a perfect square because you can not factor it.