Two groups of students practiced solving inequalities. Find the student in each group who made a mistake and complete the statements.

What number must you add to complete the square x^2+12x=16

Ernest is purchasing a $175,000 home with a 30-year mortgage. he will make a $15,000 down payment. use the table below to find his monthly pmi payment.

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.