Write expression using a positive exponent
1. 5⁻ ²
2. -7 ⁻¹
3. t⁻⁶
4. n⁻²
write each expression as an expression using a negative exponent other than -1
5. 1/3⁴
6.1/9²
7.1/49
8.1/8

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?