Abraham has visited 10 states already. He has a goal of visiting all 50 states. He plans to achieve this goal by visiting 5 new states per year (y) for the next several years.
 Which equation and solution shows the number of years that it will take for Abraham to meet his goal?
 A 
 5y+10=50; y=12 years
 B 
 10y+5=50; y=5.5 years
 C 
 5y+10=50; y=8 years
 D 
 10y+5=50; y=4.5 years