Nine to the zero power times nine to the fifth times nine to the negative seventh

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

In the triangles, bc =de and ac fe. if the mzc is greater than the mze, then ab isdfelth

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)