Answer: (Z-4)/12
Step-by-step explanation:
(Z-4)/(4+8)
4+8 equals 12
(Z-4)/12
If you are trying to find the fraction the answer i believe is 4/8 b/c you have 2 greys in all and two blues in all and all the colors together are a maximum of 8. The decimal would be 0.5 Hope this helps!!
Assuming that the 1.5 is in miles you must add 1.5 to 5.25 because you are looking for the previous elevation of the plane before it descended giving you an answer of 6.75 miles.