Answer:
1.> 374$
2.> in between the age 21 - 64
3.> The data represented above shows the cost of health insurance for each age group where we can clearly see the smooth increase in cost as the age gets bigger.
4.> The graph above shows relation of age with the cost so most likely it will be the same for cars as aging also applies to vechiles.
5.> The graph will follow the same rate of increasement as it goes on and on.