How many different designs are possible if you are asked to use for different colors to paint a rectangle that is divided in four equal regions From left to right with no region having the same color

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?