Regression Models Answers

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

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

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

Juan analyzes the amount of radioactive material remaining in a medical waste container over time. He writes the function f(x)=10(0.98)x to represent the amount of radioactive material that will remain after x hours in the container.Rounded to the nearest tenth, how much radioactive material will remain after 10 hours?

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

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.

The table shows the value of an account x years after the account was opened.

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.

The table represents the temperature of a cup of coffee over time.