# How do you use the prediction equation to predict the missing value?

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Being that the answers are in the back of my book, I don't seem to be getting the correct one. My prediction equation is correct: #y = 1.67x - 3269.64#

Please help in explaining how the answer to the missing value is: **about 87 million**

Being that the answers are in the back of my book, I don't seem to be getting the correct one. My prediction equation is correct:

Please help in explaining how the answer to the missing value is: **about 87 million**

##### 1 Answer

Aug 10, 2016

Substitute the year (

#### Explanation:

Given

where

**in millions**), and

For the year

So