A carpet is thrown upwards and its height h metres after t seconds is given by the formula h=35r-5r^2. How long does it take to reach a height of 50m? Explain the meaning of the double answer
assuming you meant
h = 35t-5t^2, then just solve
35t-5t^2 = 50
If you get two answers, then that is because the carpet went up higher than 50 meters, and then came back down.
I must say, throwing a carpet up more than 50 meters is quite a feat! Was it shot from a cannon?