Final answer:
Without a specific equation or context, we cannot solve for x. Generally, quadratic equations use the quadratic formula to find solutions, and linear equations can be rearranged to isolate x.
Step-by-step explanation:
The student has asked to solve for x but has not provided a specific equation to work with. A possible interpretation is that they are asking to solve a quadratic equation, as the practice test references equations of the forms ax² + bx + c = 0 and y = mx + b. However, without a proper context or numerical values for the constants, we can't provide a numerical solution.
To solve a quadratic equation of the form ax² + bx + c = 0, you would normally use the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a). For a linear equation like y = mx + b, you would solve for x by isolating it on one side of the equation.