Deduce the formula for the area of the triangle by bisection of the rectangle ( use the formula of the rectangle)

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?