Regression Models Answers

The quadratic regression graphed on the coordinate grid represents the height of a road surface x meters from the center of the road.

The data in the table compares x, the number of pages in a chapter, to y, the amount of time, in minutes, spent reading. The function y = 0.86x – 0.09 models the data in the table.

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

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.

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?

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

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

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