How do volcanoes affect the land around them science interactive book

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 2 math heres the 2 equations i came up with 7x+5y=96 and 3x+2y= -40 show all workiv be stuck on this and anther one for days and if i get the 2 questions right i pass the class.

Idon’t understand 8. plz ! we are finding the area of polygons. thx in advance!

Physical needs include: a. the need for sleep b. the need to feel safe c. the need to feel secure d. all of the above