Managerial economics question

Using a spreadsheet like the following, entering formulas for the total revenue and consumer’s surplus, for the total

revenue and consumers surplus, and given the following demand curve of a consumer for a monopolist’s product

Q=14-2P

(a) find the total revenue of the monopolist when it sells 6 units of the commodity without practicing any form of price discrimination. What is the value of the consumers surplus? (b)/what would be the total revenue of hte monopolist if it practiced first-degree price discrimination?How much would the consumers surplus be in this case?(c)What if the monopolist charged P=$5.5o for the first 3 units-what type of price discrimination is this?