Kendra needs to organize information about last year's sales. She wants to calculate how much revenue was generated and compare it to sales data from previous years. Which type of program will be the best for Kendra to use to help her achieve task

mark, a civil engineer, entered into a contract with david. as per the contract, mark agreed to design and build a house for david for a specified fee. mark provided david with an estimation of the total cost and the contract was mutually agreed upon. however, during construction, when mark increased the price due to a miscalculation on his part, david refused to pay the amount. this scenario is an example of a mistake.