(a) \( 5+2(2 x+5) \)

Let’s expand that expression! Start by distributing the \(2\) in \(2(2x + 5)\). This gives you \(4x + 10\). Now, bring it all together: \(5 + 4x + 10\). Combined, \(5 + 10\) gives you \(15\), so the simplified expression is \(4x + 15\). Now, let's throw in a little math magic! Did you know that simplifying expressions like this is a fundamental skill not just in algebra, but in many real-world scenarios such as budgeting or analyzing data? It’s like finding the treasure hidden beneath layers of complexity!