Question

Use the model to find the expected number of automobile registrations (in millions) for year 1,988.

Express you answer as a decimal rounded to the nearest hundredth. Do not include units with your answer.

Answer 1

6.26 automobile registrations

Explanation:

Given

`y=0.3949x-778.7` --- [function, missing from the question]

Required

The expected number in 1988

To do this, we substitute 1988 for x in:
`y=0.3949x-778.7`

`y = 0.3949 * 1988 - 778.8`

`y = 785.0612 - 778.8`

`y = 6.2612`

`y \approx 6.26` --- approximated to the nearest hundredth