the seats in a theatre are arranged so there are 80 seats in the 1st row, 77 seats in the 2nd row, 74 seats third row and so on for 18 rows altogether. how many seats are there in the last row?

The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is find the pressure exerted when the temperature of the gas is 380 degrees f show work for the

What expression is equivalent to 42x-56y

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.