1. Write a function named problem1 to simulate the purchases in a grocery store. Write statements to read the price of each item until you enter a terminal value to end the loop. Calculate the subtotal and add a sales tax of 8.75% to the subtotal. Return the subtotal, the amount of the sales tax, and the total. Call the function and display the return results. (25 pts)

When you type the pwd command, you notice that your current location on the linux filesystem is the /usr/local directory. answer the following questions, assuming that your current directory is /usr/local for each question. a. which command could you use to change to the /usr directory using an absolute pathname? b. which command could you use to change to the /usr directory using a relative pathname? c. which command could you use to change to the /usr/local/share/info directory using an absolute pathname? d. which command could you use to change to the /usr/local/share/info directory using a relative pathname? e. which command could you use to change to the /etc directory using an absolute pathname? f. which command could you use to change to the /etc directory using a relative pathname?