B, I took this test recently and got it right
-- Look for a common factor of both the top and bottom numbers.
==> 5 is a common factor of 45 and 100 .
-- Divide the top and bottom numbers by their common factor.
==> 45/100 = 9/20 .
-- Look for another common factor of both the top and bottom numbers.
==> The only common factor now is ' 1 ' .
==> That means the fraction is now as simplified as it can get.
5 dimes = 50 cents
2 nickels = 10 cents
you have 60 cents
If the exponent is negative move the decimal to the left if it's positive move to the right
9(10)=90
8(9)=72
7(8)=56
6(7)=42
5(6)=30
4(5)=20
3(4)=12
3=12
