Which expressions are polynomials?

Select each correct answer.

2x4−y

6 + w

y2−y√3+4

z + 1

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?

Asix-sided number cube is rolled twice. what is the probability that the first roll is an even numbe and the second roll is a number greater than 4?

If the tip varies directly with the number of guest which equation represents between the tip, t, and the number of guest, g?