The problem states that Noah is trying to solve the inequality $7x + 5 > 2x + 35$. He first solves the equation $7x + 5 = 2x + 35$ and finds that $x = 6$. The question asks how this solution helps Noah solve the inequality $7x + 5 > 2x + 35$.
2025/3/25
1. Problem Description
The problem states that Noah is trying to solve the inequality . He first solves the equation and finds that . The question asks how this solution helps Noah solve the inequality .
2. Solution Steps
The solution to the equation , which is , represents the point where the expressions and are equal. This point divides the number line into two intervals.
To solve the inequality , we need to determine for what values of the expression is greater than the expression .
We know that at , the two expressions are equal. So we need to test values on either side of .
Let's test (a value greater than 6):
Since , the inequality holds for .
Let's test (a value less than 6):
Since , the inequality does not hold for .
Therefore, the solution to the inequality is . The value is the boundary between the region where and the region where . Solving the equation allows us to find this boundary point.
3. Final Answer
The solution to the equation , which is , helps Noah solve the inequality by giving him the boundary point. He knows that the solution to the inequality will either be or . He can then test a value in each interval to determine which interval contains the solution to the inequality. In this case, the solution to the inequality is .