Hey can someone help me?

Create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

Find an equation for the linear function which has slope -10 and x-intercept -7

For each proportion find the unknown number x 1/5/8=×/15