4 + c = 0 how do I solve that?

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

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?

The police chief wants to know if the city’s african americans feel that the police are doing a good job. identify the management problem (i.e dependent variable) and identify the independent variable.