Algebra-1

Question Analysis
This question tests the student's ability to solve a real-world problem involving a compound inequality and express the solution in interval notation.

Key Concept Explanation
The key concept here is understanding how to solve each individual inequality and then find the intersection of the solutions since it is an "and" statement, and applying it to a real-world context.

Step-by-step Solution
1. Solve the first inequality: . Add 10 to both sides: . Divide by 2: .
2. Solve the second inequality:

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