I have no idea how to do this

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 f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.