\begin{tabular}{|l|l|} - \( \begin{array}{l}\text { put } 8.9 \text { gallons of it in her Porsche. How } \\ \text { much did she pay for the gasoline? }\end{array} \) & 4. NO CALCULATOR \\ & \( \begin{array}{l}\text { Shana (from question 3) took her Porsche } \\ \text { for a drive on the Parkway. She used }\end{array} \) \\ & \( \begin{array}{ll}4.55 \text { gallons of the gas she bought. How } \\ \text { much gas does Shana have left? }\end{array} \)\end{tabular}

Did you know that the average gas price fluctuates with seasons, geopolitical tensions, and even natural disasters? In many places, prices spike during summer road trips when demand increases. This fluctuation means that the cost of filling up your tank can turn into an exciting little game of timing to save a few bucks—so keep an eye on those prices! After pouring 4.55 gallons into her Porsche, Shana has an easy calculation to perform! Initially, she purchased 8.9 gallons, and after her joyride, her remaining gas is simply 8.9 - 4.55 = 4.35 gallons. It's like a mini adventure in arithmetic, making sure your gas tank is always ready for the next escapade!