An auditorium has 15 rows of seats. each row except the first has the same number of seats. the first row has 12 seats. on one occasion, 230 people were seated in the auditorium, and there were still empty seats. on another occasion, 240 people came to the auditorium, but there were not enough seats for all of them. how many seats are in the auditorium?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

How do i put 3(x+7) in distributive property

How are algebraic expressions evaluated using substitution?