Tickets for a touring production of sweeney todd cost $90 for orchestra seats and $60 for balcony seats. you purchase nine tickets, some in the orchestra and some in the balcony, for a total cost of $720. how many orchestra tickets were purchased?

6 orchestra tickets were purchased

Step-by-step explanation:

orchestra purchased tickets = x

balcony purchased tickets = y

ou purchase nine tickets

total cost of $720

x + y = 9

90x + 60y = 720

x + y = 9 (*-60)

90x + 60y = 720

-60x - 60y = -540

90x + 60y = 720 (+)

30x = 180

x = 6

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option