Please help this due soon!!

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.

What are the domain and range of the function f(x)=2^x+1

How many 2/5s are in 1 and 1/2 plz someone me right now