If 8 gal of gasoline costs $27.84, how much would it cost to completely fill a 14-gal tank?

Asap will give brainliest and a lot of points

For what value of x does 4x = (1/8) x + 5?

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?