Answer:
Patricia's account balance after thirteen years is $867.15.
Step-by-step explanation:
It is given that,
Principal on deposited amount is $612.40
Rate is 3.2%
We need to find Patricia's account balance after thirteen years, t = 13 years
This problem is based on the concept of simple interest. Interest is given by :

Net amount = $612.40 + $254.75=$867.15
28/7=4km is car journey covered by car in 1l
64/4=16l
Slope: 4.5
Y= 4.5x + 5
Extra:
Y intercept would be (0,5)