I need help with this plzz:(

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?

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250