If the temperature dropped by *64F. The temperature dropped 7*F and then rose 11*F. How much does the temperature need to rise or fall to return to the initial temperature of 64*F?

Answer 1

If the temperature dropped 7*F and then rose 11*F, the net change in temperature is 11*F - 7*F = 4*F.
To return to the initial temperature of 64*F, the temperature needs to rise by 64*F + 4*F = <<64+4=68>>68*F. Answer: \boxed{68}.