Ablueprint for a house shows the height of the house to be inches. the actual house is feet tall. what is the unit rate in feet per inch?

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?

State if the two triangles are congruent. if they are, state how you know?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?