Equation 1.
20÷4=5
0×3=0
5-5=0
Equation 2.
44÷4=11
2×3=6
11-5=6
Equation 3.
56÷4=14
3×3=9
14-5=9
9x(y+4)-10(y+4)
(9x-10)(y+4)
H=80 ft
Distance from horizon
=sqrt(h/0.57) miles
=sqrt(80/0.57) miles
=11.85 miles.
Answer:
The choose C. 24x+6y
Step-by-step explanation:

I hope I helped you^_^
-3x = -3 because you would multiply one of the equations by -1 to eliminate y.