Im desperate, can someone me on 10 a.) b.) and c.) im begging can someone ! if you answer this it is worth 40 !

Lena reflected this figure across the x-axis. she writes the vertices of the image as a'(−2, 8), b'(−5, 6), c'(−8, 8), d'(−4, 2).

What is the total surface area of this square pyramid?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)