Annually cumulating interest can be determined by the following formula:

r represents the interest rate as a decimal, and P represents the starting amount of money.
The answer would be line segment.
You said that 'A is 30' right there in the equation
so it would be
Xsquared=30
<em>3</em><em>9</em><em>></em><em>3</em><em>8</em>
<em>1</em><em>6</em><em>=</em><em>1</em><em>6</em>
<em>1</em><em>1</em><em><</em><em>3</em><em>1</em><em>5</em>
<em>5</em><em>></em><em>4</em>
<em>Hope </em><em>this </em><em>helps </em><em>you </em><em>mate </em>
<em>~♥~</em><em>♪☆\(^0^\) ♪(/^-^)/☆</em><em>♪☆\(^0^\) ♪(/^-^)/☆</em><em>♪\(*^▽^*)/\(*^▽^*)/</em><em>♪☆\(^0^\) ♪(/^-^)/☆</em><em>♪ ♬ ヾ(´︶`♡)ノ ♬ ♪</em>