I need help with this word problem please!

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?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x