Answer:
$323
Step-by-step explanation:
The monthly payment can be calculated using the formula:

where:
- M=monthly payment
- P=amount borrowed
- r=annual interest rate
- n=total number of monthly payments:
Our parameters are defined as:

We plug our parameters in the equation to solve for M;



Hence, the monthly payment is $323
4+8+3 would be 15 because 4 plus 8 is 12 and 12 plus 3 is 15
Hope this helps
.16 because the square root of 16 is 4, then you would want to divide 4 by 25.. which would equal .16 or 4/25