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)

c.

step-by-step explanation:

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

answer: -8.2562234e+13

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation: