I don't see the steps, but the steps that I use are:
1. Multiply the denominator by the whole number
2. Then you add the numerator to your sum.
3. The number that you just got by doing those steps is now going to be your numerator and your old denominator is going to stay your denominator.
Example:
2 2/3
3*2=6
6+2=8
8/3 is your new answer.
0≤h(t)≤144, which means that the height of the object can be between 0 and 144 feet, including those limits.
the answer is 763 because 763 - 763 = 0