Solve using substitution

X+y=9
Y=2x-6

Show work plz

If f(x)=2x+2and g(x)=x^3, what is (g•f)(2)

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error

Benefit(s) from large economies of scale, in which the costs of goods decrease as output increases. natural monopolles perfect competition