According to the pattern, the number of kernel of corn is double every day, so we can conclude that the number of kernel of corn oN as a function of the days x is given by:
![N(x)=2^(x-1)](https://img.qammunity.org/2023/formulas/mathematics/college/pbin1gf6tdknawjro6dejr6xm5fbn6kfzb.png)
For x = 21:
![N(21)=2^(21-1)=2^(20)=1048576](https://img.qammunity.org/2023/formulas/mathematics/college/ubzj9bwjo8gxljxmdbcordjvqttv69gh3p.png)
Since each kernel corn weighs 0.07, the total weight is given by:
![\begin{gathered} Tw=0.07\cdot1048576 \\ Tw=73400.32g \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/jhp1p3l7sn50i4fnlzqh4pgcmydf58zhui.png)