2 hours because in one hour the cyclist biked 15 miles. That means you could follow the formula 30=15x where 30 is the total distance traveled and x=the number of hours cycled. (You could solve it two ways) 1. Division: 30=15x ⬅️divide each side by 15 2=x ⬅️ 15 cancels out and you’re left with x=2
2. Multiplication: (you can use to check answer also) 30=15x; x=2 30=15(2) ⬅️ plug in 2 30=30 ✅
The Associative has to do with re-grouping numbers. There are only two numbers so this does not apply here. Commutative is where you change the order; that's what the equation is demonstrating.
