A school auditorium has 1,200 seats. For an upcoming choral concert, tickets will be sold for $12.00 and $10.00. At least 500 tickets will be priced at $10.00 each. The total sales must be at
least $7,200 to make a profit. Write and graph a system of inequalities to show the possible ways to price tickets.

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.