Write : what’s the algebraic expression for the difference of 9 and x

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

Abag has more green balls than blue balls, and there is at least one blue ball. let bb represent the number of blue balls and let gg represent the number of green balls. let's compare the expressions 2b2b and b + gb+g. which statement is correct? choose 1

Which statement justifies why angle ebc measures 90?