### Graph, Linear Model, Life Expectancy, Data, Subscriptions, Video Rental, MATH Quiz

The key terms in this Math course include Graph, Linear Model, Life Expectancy, Data, Subscriptions, Video Rental, Unit Rate of Change, Mechanic Charges.

Consider the graph below:

Could we use this linear model to predict the life expectancy in 2020? *Complete the sentence below by selecting the best of the available phrases.*

Yes , because we have 115 years of data that indicate a strong linear relationship between life expectancy and time.

**Answer 1:**

**Yes**

**Answer 2:**

**We have 115 years of data that indicate a strong linear relationship between life expectancy and time.**

Video rental stores are being replaced by streaming subscriptions. In one area, there were 9 video rental locations in 1996, but by 2016, that number had dwindled to 4. Assuming a constant decrease in the number of stores, calculate the unit rate of change (slope) from 1996 to 2016.

*Round your answer to the nearest hundredth. Do not include units with your answer.*

**Answer**

**-0.25**

A mechanic charges $55 for an engine check and $25 per hour for his services.

Complete the linear model of his charges:

y = 25 x [ Select ] – / * + [ Select ]

**Answer 1:**

**25**

**Answer 2:**

**+**

**Answer 3:**

**55**

Consider the graph below:

Could we use this linear model to predict the life expectancy in 2020? *Complete the sentence below by selecting the best of the available phrases.*

Yes , because we have 115 years of data that indicate a strong linear relationship between life expectancy and time.

**Answer 1:**

**Yes**

**Answer 2:**

**We have 115 years of data that indicate a strong linear relationship between life expectancy and time.**

Video rental stores are being replaced by streaming subscriptions. In one area, there were 9 video rental locations in 1996, but by 2016, that number had dwindled to 4. Assuming a constant decrease in the number of stores, calculate the unit rate of change (slope) from 1996 to 2016.

*Round your answer to the nearest hundredth. Do not include units with your answer.*

**Answer**

**-0.25**

A mechanic charges $55 for an engine check and $25 per hour for his services.

Complete the linear model of his charges:

y = 25 x [ Select ] – / * + [ Select ]

**Answer 1:**

**25**

**Answer 2:**

**+**

**Answer 3:**

**55**