at the drive in it cost 5 dollars per vehicle plus 2 dollars per person in the vehicle construct an equations from this information

Which equation matches the graph shown ?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be