1 hundredth is equal to 0.01 therefore 20 hundredths is equal to 0.2. 1
thousandth is equal to 0.001 therefore 2 thousandths is equal to 0.002.
Clearly these are not equivalent. <span />
The independent variable is <em>n. </em>An independent variable, generally, is the value you can alter. The dependent variable, <em>t</em>, is the one that changes as a result. Here, we can control the number of months of membership, but not the total charge.