I am wasting 20 points

What type of file does a cookie place on web site visitors' computers so that web site managers can customize their sites to their visitors' preferences?

Which of the following is not contained on the slide show toolbar? a. next button b. slide button c. close button d. pen too

Least square fit to polynomial write a function leastsquarefit3pol that solves a linear system of equations to find a least squares fit of a third order polynomial to an experimental data set given as two row arrays. the function leastsquarefit3pol must explicitly solve a set of linear equations and cannot use polyfit. there should be no restriction on the size of the problem that can be solved.