Which brand of statistics deals with organization and summarization of collected information

What is the factor form of x^2-9x+14

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.