23. Find the regular price. soccer ball amount of discount: $\$ 5.55$ discount rate: $30 \%$

Step 1 ：The problem provides the amount of discount which is $5.55 and the discount rate which is 30% or 0.3 in decimal form.

Step 2 ：We are asked to find the regular price of the soccer ball.

Step 3 ：We can use the formula Regular Price = Amount of Discount / Discount Rate to find the regular price.

Step 4 ：Substituting the given values into the formula, we get Regular Price = $5.55 / 0.3.

Step 5 ：Calculating the above expression, we find that the regular price of the soccer ball is \(\boxed{18.5}\) dollars.