Solve the system by substitution.
2x – 3y = 38
-x – 6 = y

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

Three cylinders have a height of 8 cm. cylinder 1 has a radius of 1 cm. cylinder 2 has a radius of 2 cm. cylinder 3 has a radius of 3 cm. find the volume of each cylinder ( ! : ”0 )

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia