7.3: Calculate the Slope between each set of coordinates A B and C please help with an equation on how you did it! A

(1,3) (4,9)

B

(2,1.5) (30,3.5)

C

(10,35)

(30, 75)

Thank you!

Breana is selling tickets to a choral performance. on the first day of ticket sales , she sold 3 senior citizen tickets and 1 child ticket for a total of $38. breana took in $52 on the second day by selling 3 senior citizen tickets and 2 child tickets. what is the price of a senior citizen ticket?