Find the value of x for the Hexagon

I'm terrible at math any here is appreciated.

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')