Answer:

Akshay has 45.60 dollars.

If he spends 5.10 dollars a day for the next seven days, he will spend a total of 5.10*7 = 35.70 dollars in seven days.

To find out the money he will be left with at the end of seven days we need to subtract the total expenses from the initial amount

45.60 - 35.70 = 9.90 dollars

Akshay will be left with 9.90 dollars at the end of seven days.