Z=34
^^^^^^^^^^^^^^^^^^^^^^^^^
The answer is X=4
To find this you first remove you -5 my adding it to 7 this gives you 3x=12 then you divide 3 into 12 that gives you 4
The one on the LEFT because an x intercept is how many lines touch the x-axis so the one on the left had 1 more x intercept then the right one.
The temperature went up by 33° fahrenheit because -8+8=0 and 0+25= 25 so 8+25=33