For a school fundraiser. Elena will make T-shirts. She will order T-shirts and print graphics on them. Elena must spend $105 on a printing machine and $3.80 per shirt for the blank shirts, ink, and other supplies.

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.

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

How to do this , and can some one explain