The last time robert filled up his car with gas, he paid $24.50 for 7 gallons. this time, he needs 15 gallons. if the price is the same, how much would he pay?

Harry’s soccer team plays 2 nonconference games for every 3 games that they play against conference opponents. if y represents the number of nonconference games and x represents the number of conference games, which equation best models this proportional relationship? a)y=2/3 x b)y=3/2 x c)y = 2x d)y = 6x

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?