Write a function \color{red}{\verb|trace(matrix)|}tr ace(matrix) that takes a square matrix \color{red}{\verb|matrix|}matrix and returns the value of its trace. Then use your implementation of \color{red}{\verb|trace()|}trace() and compute the value of \color{red}{\verb|trace(my matrix)|}trace(my matrix) for instances of \color{red}{\verb|my_matrix|}my_mat rix as defined by the code snippet provided in the previous question.

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The “rule of 72” is used to approximate the time required for prices to double due to inflation. if the inflation rate is r%, then the rule of 72 estimates that prices will double in 72/r years. for instance, at an inflation rate of 6%, prices double in about 72/6 or 12 years. write a program to test the accuracy of this rule. for each interest rate from 1% to 20%, the program should display the rounded value of 72/r and the actual number of years required for prices to double at an r% inflation rate. (assume prices increase at the end of each year.)

Which of the following tasks is an audio technician most likely to perform while working on a nature documentary? (select all that apply). eliminating potentially distracting background noise adding sound effects making sure the lighting is adequate for a particular scene changing the narration to better match the mood of the documentary