1. **Problem Statement:** Anna wants to buy a bag worth 450 pesos. She has already saved 120 pesos and plans to save the same amount each day for 10 days. How much should she save per day to buy the bag in 10 days? 2. **Translate to Linear Equation:** Let $x$ be the amount Anna saves each day. The total amount saved after 10 days is the initial 120 pesos plus 10 times $x$. The equation is: $$120 + 10x = 450$$ 3. **Solve the Equation:** Subtract 120 from both sides: $$10x = 450 - 120$$ $$10x = 330$$ Divide both sides by 10: $$x = \frac{330}{10} = 33$$ 4. **Interpretation:** Anna needs to save 33 pesos each day for 10 days to have enough to buy the bag. 5. **Visual Representation:** $120 + 10x = 450$ $120 + x + x + x + x + x + x + x + x + x + x = 450$ This shows the initial 120 pesos plus 10 increments of daily savings $x$ equals 450 pesos. **Final answer:** Anna should save **33 pesos per day**.