A broadway theater has 400 seats, divided into orchestra, main, and balcony seating. Orchestra seats sell for $60, main seats for S50, and balcony seats for $30. If all the seats are sold, the gross revenue to the
theater is $18,400. If all the main and balcony seats are sold, but only half the orchestra seats are sold, the gross revenue is $16,000. How many are there of each kind of seat?

Answer soon(fast) 15 pts-brainliest? for right answer with small explination a restaurant catered a party for 40 people. a child’s dinner (c) cost $11 and an adult’s dinner (a) cost $20. the total cost of the dinner was $728. how many children and adults were at the party? use the table to guess and check.(i couldn't get the graph onto the question)                                8 children and 32 adults9 children and 31 adults10 children and 30 adults12 children and 28 adults

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

What is the total surface area of this square pyramid?