How can i sove this? :(

02 CVP Analysis Silicon Valley Company's estimated formulas are as follows: Sales and Costs Formulas Sales line Y= 3X Costs line Y=X+S 2,000 Required: 2-1 Define the profit function. 2-2 Contribution Margin ratio? 2-3 What is the break-even point in units ? 2-4 If the company sets the target profit of $ 2,000, how much is target sales