Regression Models Answers

The table shows the wavelength of the sound produced by keys on a piano x keys away from the A above middle C.

The function f(t) = 349.2(0.98)t models the relationship between t, the time an oven spends cooling and the temperature of the oven.

The table compares x, the number of minutes of television Sam watched each day, to y, the number of minutes she spent exercising. The function y = –0.78x + 95 models the data in the table.

Janna is making a prediction of the frequency of a key that is 12 keys from middle C.

The table shows the population of a small town over time. The function P = 10,550(1.1)x models the population x years after the year 2000.

The data in the table represents a company’s profit based on the number of items produced.

The table shows the estimated number of bees, y, in a hive x days after a pesticide is released near the hive.

Marta’s mother shared a funny video of their cat on the Internet. The total number of people who had viewed the video over the first 30 days could be modeled using the function f(x) = 33(1.3)x where x is the number of days the video has been online.

The graph shows the data points in the table and the exponential regression model associated with the data. Based on the graph of the regression model, which is true?

Company A: A 2-column table with 5 rows. The first column is labeled hours with entries 5, 12, 20, 29, 42. The second column is labeled earnings (dollar sign) with entries 340, 404, 460, 530, 630. Company B: A 2-column table with 5 rows. The first column is labeled hours with entries 4, 9, 20, 32, 39. The second column is labeled earnings (dollar sign) with entries 125, 234, 450, 668, 828.