Normally, two packs of batteries cost $1.89*2=$3.78. The discounted price of $3.40 divided by the standard price of $3.78 for two packs is approximately .9, or 90 percent. Therefore, we have an approximately ten percent discount with the sale.
Answer: Answer is f(x) = 25x4 - 7x2 + x + 4
Step-by-step explanation: