I dont have a calculator, but 1000(1 plus .145)^12..... I guess
You divide both numbers by the greatest common factor, which in this case is the number 8 so the equation would look some what like this
16/8=2
8/8=1
The ratio is 2:1
C
She'd have to have given her more than 48 dollars to receive more than 30 dollars back
It can't be D because that implies she could've received exactly 30 dollars in change and the question states she received more than that.