Answer:
1.
[tex] {9}^{ - 4} = 1.5241579×10−4[/tex]
2.
[tex]17 - {1}^{0} = 16[/tex]
3.
[tex] {3}^{ - 3} = 0.03703703704[/tex]
4.
[tex] {7}^{ - 2} = 0.02040816327[/tex]
