1. The problem asks to write three expressions equivalent to the given expression. 2. The original expression is $7.26 \times 5x \times 7$. 3. First, simplify the constants: $7.26 \times 5 \times 7$. 4. Calculate $7.26 \times 5 = 36.3$. 5. Then multiply $36.3 \times 7 = 254.1$. 6. So the expression simplifies to $254.1x$. 7. Now, write three equivalent expressions: a. $254.1x$ b. $(7.26 \times 35)x$ since $5 \times 7 = 35$ c. $(\frac{1}{3} \times 36.3 \times 7)x$ (breaking 7.26 as $\frac{1}{3} \times 21.78$ and adjusting accordingly) 8. Each expression represents the same value as the original expression. Final answer: $254.1x$, $(7.26 \times 35)x$, and $(\frac{1}{3} \times 36.3 \times 7)x$ are equivalent expressions.