Answer: They spend 5.368 × 10⁹ all together on ice cream and baby food between 2008 and 2009.
Step-by-step explanation:
Since we have given that
Amount spent on baby food between 2008 and 2009 = [tex]8.48\times 10^8[/tex]
Amount spent on ice cream between 2008 and 2009 = [tex]4.52\times 10^9[/tex]
We need to find the total amount spend all together on ice cream and baby food.
Total amount would be
[tex]8.48\times 10^8+4.52\times 10^9\\\\=5.368\times 10^9[/tex]
Hence, they spend 5.368 × 10⁹ all together on ice cream and baby food between 2008 and 2009.