Mia babysits some children after school. For each child, she charges x 1 2 dollars per hour. One day she cared for 2 children for 3 hours each. She paid $4 per child for materials for activities. Two students wrote expressions for the amount of money Mia earned. Are their expressions equivalent? Paolo wrote the expression 3(x 1 2) 1 3(x 1 2) 2 8. Carla wrote the expression (3x 1 6) 2 4 1 (3x 1 6) 2 4. Simplify the expressions to see whether they are equivalent. Paolo’s Expression Carla’s Expression 3(x 1 2) 1 3(x 1 2) 2 8 (3x 1 6) 2 4 1 (3x 1 6) 2 4 5 3x 1 6 1 3x 1 6 2 8 5 3x 1 3x 1 6 1 6 2 4 2 4 5 6x 1 4 5 6x 1 4 Why did Paolo add 3(x 1 2) to itself and subtract 8?