Answer:

Step-by-step explanation:
Given :

Now,

Therefore, expression is equivalent to 
Answer:
y=10x+10
Step-by-step explanation:
Answer: 10
Step-by-step explanation: subtract 5 by 45 to get 40 then divide 4 to get 10
Answer:
£10.1
Step-by-step explanation:
Highest exchange rate=1.3401
Lowest exchange rate=1.3199
The money Khan would have received more if he exchanged currencies at the highest rate compared to the lowest rate=500*(1.3401-1.3199)=£10.1