Cual es la suma de x,y,y,z​

huh whats the problem

Step-by-step explanation:

The change in height is 30 1/4 feet.

Solution:

Change in height: h=?

The car starts by going up 80 and one half feet:

h=+80 1/2 feet

Then the car goes down 50 and one fourth feet:

h=80 1/2 feet - 50 1/4 feet

h=80 2/4 feet - 50 1/4 feet

h= 80-50 2/4-1/4 feet

h=30 (2-1)/4 feet

h=30 1/4 feet