Can someone pls give me the answer to this?

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?