Astadium has 10,000 seats, divided into box seats, lower-deck seats, and upper-deck seats. box seats sell for $10, lower-deck seats sell for $8, and upper-deck seats sell for $5. when all the seats for a game are sold, the total revenue is $70,000. the stadium has four times as many upper-deck seats as box seats. find the number of lower-deck seats in the stadium.

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem