6. In cell K4, create a formula using the IF function to calculate the interest paid on the mortgage (or the difference between the total payments made each year and the total amount of mortgage principal paid each year). a. The formula should first check if the value in cell H4 (the balance remaining on the loan each year) is greater than 0. b. If the value in cell H4 is greater than 0, the formula should return the value in J4 subtracted from the value in cell D5 multiplied by 12. Use a relative cell reference to cell J4 and an absolute cell reference to cell D5. (Hint: Use 12*$D$5-J4 as the is_true argument value in the formula.) c. If the value in cell H4 is not greater than 0, the formula should return a value of 0.

You have a linux system that has a 1000gb hard disk drive, which has a 90gb partition containing an ext4 filesystem mounted to the / directory and a 4gb swap partition. currently, this linux system is only used by a few users for storing small files; however, the department manager wants to upgrade this system and use it to run a database application that will be used by 100 users. the database application and the associated data will take up over 200gb of hard disk space. in addition, these 100 users will store their personal files on the hard disk of the system. each user must have a maximum of 5gb of storage space. the department manager has made it very clear that this system must not exhibit any downtime as a result of hard disk errors. how much hard disk space will you require, and what partitions would you need to ensure that the system will perform as needed? where would these partitions be mounted? what quotas would you implement? what commands would you need to run and what entries to /etc/fstab would you need to create? justify your answers.