HELPPP PLS
What is the vertex form of the equation?
y = x² – 2x+8

How do you solving the solution of each system using elimination?

The formula for the volume of a right square pyramid is given below, where a is the side length of the base and h is the height.

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?