120 = 15% x
15% = 0.15
x = 120 / 0.15 = 800
Make sure the question is stated clearly
<span> 9.187 to the nearest tenth is 9.2
The 1 in 9.187 is in the tenths place and since the number after it is over 5, you round up. </span>
A^2 - b^2 = (a-b)(a+b)
To test it, expand the right hand side.
