Two rectangle are conguruent if

they are congruent if they have the same exact measurements as each other (side lengths AND angles)

Step-by-step explanation:

:)

You are on the right track in terms of the expressions you created.

Ronnie: x Lisa: 2x+500+650 Mark:2x+500

To solve for how much everyone contributed, we have to solve for x, then use the rest of the expressions to solve for each person. Since we know the TV cost $2000, we can add all the expressions together and solve.

2000=x+2x+500+650+2x+500

2000=5x+1650

5x=2000-1650

5x=350

x=70

Now that we know x=70, we can use our expressions to solve for what each person contributed. Ronnie is easy because we already know he contributed $70.

Lisa: 2x+500+650 L:2(70)+1150 L:140+1150 Lisa: $1290

Mark: 2x+500 M:2(70)+500 M:140+500 Mark: $640