A fish was swimming -6 1/2 feet below the water's surface at 7:00 a. m. Four hours later, the fish was at a depth that is 8 1/4 feet below where it was at 7:00 a. m. What rational number represents the position of the fish with respect to the water's surface at 11:00 a. m.?

Step-by-step explanation:

feet below the surface

adding the 2 quantities

3  + 5

= (3 + 5 ) + ( + )

= 8 + ( + )

= 8 +  = 8  =

step-by-step explanation:

given that ab is divided into equal parts as

ac, cd, de, ef, fg, gh, hi, ib.

from this we find that f is the midpoint of ab.

so using mid point formula we find

f = (3,7)

similarly considering fb, we get

h = mid point of fb = ((6,6) and g, mid point of fh is

g = (9/2, 13/2)

i is mid point of hb

so i =(15/2,11/2)