Which of these triangle pairs can be mapped to each other using both a translation and a reflection across the line containing AB?

Which of the following is correct interpretation of the expression -4+13

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?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?