E (f+g) can someone help

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

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?

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5