Question

the graph and table shows the relationship between y, the number of words jean has typed for her essay and x, the number of minutes she has been typing on the computer. according to the line of best - fit, about how many words will jean have typed when she completes 60 minutes of typing? 2,500 2,750 3,000 3,250

Explanation:

Step1: Identify the linear - regression equation

The linear - regression equation is given as $y=- 80.307x + 7114.444$.

Step2: Substitute the value of $x$

We want to find $y$ when $x = 60$. Substitute $x = 60$ into the equation:
$y=-80.307\times60 + 7114.444$.

Step3: Calculate the product

First, calculate $-80.307\times60=-4818.42$.

Step4: Calculate the value of $y$

Then, $y=-4818.42 + 7114.444$.
$y = 2296.024\approx2250$ (approximate to the nearest option).

Answer:

2,250