Is this chart linear or nonlinear

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?

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x