21. The table below shows the average price of a personal computer during certain years. year
price
1997
$1,950
1999
$1,719
2003
$1,420
2007
$1,175
2010
$949
2012
$725
a)
a) Write an equation to model the data using linear regression.
b)
b) Use the equation to predict the average cost of a
personal computer in 2020.
Gina Wilson (All Things Algebra)

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step-by-step explanation:

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depending on others is critical to survival. my source is apex!

step-by-step explanation:

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: