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
You could do 0.9 1.6 3.5 dont know of thats what you ment but they all have decimals :)
The parabola opens in the direction of the focus.
Since the focus is above the vertex, it opens up.
Answer:
im not sure about this one but I think its 45°
Answer:
Stuck on it to
Step-by-step explanation: