Express each relation as a table, a graph, and a mapping. Then determine the domain and range. 1. {(0, 0), (-3, 2), (6, 4), (-1, 1)}
2. {(5, 2), (5, 6), (3, -2), (0, -2)
3. {(6, 1), (4, -3), (3, 2), (-1, -3)}
4. {(-1, 3), (3, -6), (-1, -8), (-3, -7)}

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?

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?