The student's equation is a linear equation. To solve it, multiply 1.2 through the parentheses, combine like terms, and isolate B to find its value. The quadratic formula is not needed for this linear equation.
The question presents an equation 1.2 (3B-1) + 2.2 - 1.8B = 0, which seems to be missing an operator between the terms 1.2(3B-1) and 2.2. Assuming that the equation should be 1.2(3B-1) + 2.2 - 1.8B = 0, which is a linear equation and not a quadratic equation as the provided information might suggest. To solve this, first distribute the 1.2 across the parentheses, combine like terms, and then isolate B on one side to find its value. If it were a quadratic equation resembling the provided formats, we would apply the quadratic formula -b ± √(b² - 4ac) / (2a) to find the solutions for B.
For linear equations like the one provided by the student, we do not need the quadratic formula. Instead, the student should simplify the equation step by step:
Multiply 1.2 by each term inside the parentheses: 1.2 * 3B - 1.2 * 1.
Combine like terms by adding or subtracting the B terms and constant terms separately.
Isolate B by dividing both sides of the equation by the coefficient of B.
Through these steps, the student will find the value of B that solves the equation.