# Regina charges c dollars per hour to babysit. If she increases her rate by 15%, which expression represents her new rate, in dollars per hour?

The expression is $= C + \frac{15 C}{100}$
Already her charge is $C$. She increased her charges by 15%.
So She will charge $C$ and 15% of $C$. Hence -
The expression is $= C + \frac{15 C}{100}$