What are the subjects you need to study for mid-terms? all of them or just the core subjects? : (

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?

In his stamp album ,jamal has 48 new stamps and 72 used stamps. which ratio can be represented by 3/5

What is the solution set of 8x^2 -2x -1 =0