Bartlett Electronics pays all sales representatives $5\%$ commission on the first $$10,000$ of their individual sales and $10\%$ commission on their individual sales in excess of $$10,000.$ Assume that Barbara Bailey sold merchandise valued at $$14,500$ during the month of December.

Calculate the following amounts.

$($a$)$ Commission on sales in the sales base:

$($b$)$ Commission on additional sales:

$($c$)$ Gross pay: