What type of triangle is this

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Which of the following is the graph of y= square root -x-3