Tickets for all but 100 seats in a 10,000-seat stadium were sold. Of the tickets sold, 10% were sold at half price and the remaining tickets were sold at the full price of $2. What was the total revenue from ticket sales?
Select.
A) $15,840	B) $17,820	C) $18,000	D) $19,800	E) $18,810
10000 seats --&gt; Full Price : Half Price = 9000 : 1000   Price when all seats are filled = 18000 + 1000= 
<gadget id="calculator">18000 + 1000</gadget>
<output>19_000</output>
19000   100 seats are unsold --&gt; Loss due to unfilled seats= 10 + 2*90= 
<gadget id="calculator">10 + 2*90</gadget>
<output>190</output>
190   Revenue= 19000 - 190= 
<gadget id="calculator">19000 - 190</gadget>
<output>18_810</output>
18810   Answer: $18,810
<result>E</result>
Tickets for all but 100 seats in a 10,000-seat stadium were sold. Of the tickets sold, 10% were sold at half price and the remaining tickets were sold at the full price of $2. What was the total revenue from ticket sales?