Which of the following is not a polynomial?

The graph represents the gallons of water in a water tank with respect to the number of hours since it was completely filled

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

How many bananas are in a fruit bowl that has 200 total apples and bananas if there are 31 bananas for every 93 apples