Sean has two single accounts at Corona Bank. One account has a balance of $174,898.09 and the other has a balance of $277,999.99. What is the sum of Sean's balances?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Precalculus question, image attached.