A mixed fraction... is made out of a whole number and a fraction. 3 7/10
9 would be the first number and 7 would be the second.
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.
You need to use the distance formula


so the distance between points (5,-2) and (-3,8) is

which won't simplify so it stays as is