What value of n in the equation ‘nx + 5 = 3y’ would give a line with the slope -2? Please help me please!!

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?

Which measure is equivalent to 110 ml? 0.0110 l 0.110 l 1.10 l 11,000 l

What does the sign of the slope tell you about a line?