Ray is 18 years older than his sister Gloria in 15 years he will be twice as old as Gloria how old are each of them now

You and a friend went to the movies. you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

Me because i don't understand how to do it.: )