Answer:
the correct answer is 50 really hope this helped :)
Step-by-step explanation:
1. 73
2.40
3.78
werent too hard
To get the simple interest, we must use the formula: I= (p)(r )( t)
So, in this one we need to multiply $900x18x9.% and the answer will be $128.25. This is the amount of interest they are going to pay per year.
