2/3 as a decimal pl help

The school that imani goes to is selling tickets to the annual dance competition. on the first day of the ticket sales the school sold 7 adult tickets and 5 child tickets for a total of $96. the school took in $40 on the second day by seling 3 adult tickets . find the price of an adult ticket and the price of a child ticket. solve by using substitution elimination college prep algebra math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this.

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73