1. Identify the error in generating an expression equivalent to4 + 2.c 1 (10 – 4x) Step 1: 4 + 2x + 3(10+ -41) Step 2: 4 + 2 + 5 + 2. Step 3: 4 + 2r - 5 + 2x Step 4: 1 Which step contains an error? Step 1 O Step 2 O Step 3 o Step 4 2. Explain the error and how you would correct it. Type your response in the space below.​

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?