The graph shows the temperature of a liquid that is being heated during an experiment. Three of the statements are true. Which is NOT? Math item stem image

The temperature of the liquid is increasing at a constant rate.

At this rate, the temperature will rise 60° in a quarter hour.

The temperature of the liquid changed at a unit rate of 4° per minute.

At this rate, it would take less than 10 minutes for the temperature of the liquid to rise 52°.

The biologist has a second culture to examine. she knows that the population of the culture doubles every 15 minutes. after 1 hour and 15 minutes, her assistant found that 80,000 bacteria were present. a) what was the size of the initial population? b) predict the size of the culture at t=3 hours. what was the size of the population at 40 minutes? explain and justify your answers. c) create a graph of the population as a function of time. find an equation that can be used to predict the size of the population at any time t. d) examine the rate at which the bacteria culture is growing. how fast is the culture growing after 1 hour? after 1.5 hours? after 2 hours? use a time interval of h = 0.01 hours to estimate these rates. interpret these rates in terms of the context of the problem situation. how do these three rates compare?