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

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?

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 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.

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.

Jessica plots the data points relating the amount of money she needs to repay a loan and the number of months she has been making payments. She calculates two regression models. Which is true?

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 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.