Find the simple interest earned, to the nearest cent, for the principal, interest rate, and time. $530, 6%, 1 year

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?