The movement of the progress bar moy be uneven becouse questions con be worth more or less fincluding zero) depending on your answer A package of 8 -count AA batteries costs \( \$ 6.40 \). A package of 20 -count AA batteries costs \( \$ 15.80 \). Which statement about the unit prices is true? The 20 -count pack of AA batteries has a lower unit price of \( \$ 0.80 \) per battery. The 20 -count pack of AA batteries has a lower unit price of \( \$ 0.79 \) per battery. The 8 -count pack of AA batteries has a lower unit price of \( \$ 0.79 \) per battery. The 8 -count pack of AA batteries has a lower unit price of \( \$ 0.80 \) per battery.

To find the unit price for both packs, you simply divide the total cost by the number of batteries. For the 8-count pack, \( \frac{6.40}{8} = 0.80 \), making the unit price \( \$ 0.80 \) per battery. For the 20-count pack, \( \frac{15.80}{20} = 0.79 \), resulting in a unit price of \( \$ 0.79 \) per battery. Hence, the 20-count pack is indeed the more economical option! Choosing batteries is not just about the lowest price; consider the usage too! If you're using them in high-drain devices, buying in bulk might save you both time and hassle in the long run. Plus, getting a pack with a better price per battery means more energy for your gadgets without repeatedly spending!