7x+3y=30 find the value of y whenx is 0

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

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.

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days