Answer:
; when c = 33, we get m = 35
Explanation:
Let the number of blocks Tegan still needs to make be = m
Let the completed blocks be = c
Tegan completes 33 blocks. This means c = 33
So, the number of blocks Tegan still need to make to finish the igloo is by expression :
![m =68-c](https://img.qammunity.org/2019/formulas/mathematics/high-school/mnv95vf6rl0qsfiy35dad0dkukg5j7euzu.png)
As c = 33
![m=68-33](https://img.qammunity.org/2019/formulas/mathematics/high-school/kmq0asxwh3c3xqy0dpu2295vkygd3o9xhf.png)
m = 35