Which simplified ratio correctly compares 30 inches to 2 feet?

1: 15
15: 1
5: 4
4: 5

(plz fast! )

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

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.

Which equation shows the variable terms isolated on one side and the constant terms isolated on the other side for the equation -1/2x+3=4-1/4x? a. -1/4x=1 b. -3/4x=1 c. 7=1/4x d. 7=3/4x