What is the variable in the expression: 25 + 5z - 3?

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120

Graph the system of equations. {6x−4y=−244x−8y=−32 use the line tool to graph the lines.