Answer: They spend 5.368 × 10⁹ all together on ice cream and baby food between 2008 and 2009.
Explanation:
Since we have given that
Amount spent on baby food between 2008 and 2009 =
![8.48* 10^8](https://img.qammunity.org/2020/formulas/mathematics/high-school/x8mk21h6pmo60y6j85nw95vpjbif4i4sc0.png)
Amount spent on ice cream between 2008 and 2009 =
![4.52* 10^9](https://img.qammunity.org/2020/formulas/mathematics/high-school/qlx10q0728uvq7scxyd8tpspuil8znn4w6.png)
We need to find the total amount spend all together on ice cream and baby food.
Total amount would be
![8.48* 10^8+4.52* 10^9\\\\=5.368* 10^9](https://img.qammunity.org/2020/formulas/mathematics/high-school/n51uwktiz67xcc3r27ovxlv4j2uxx8hhf4.png)
Hence, they spend 5.368 × 10⁹ all together on ice cream and baby food between 2008 and 2009.