Answer:
Step-by-step explanation:
0.825200
(correct me if I’m wrong)
The answer is 6km
6km is the greatest
You put all the numbers on one side of the equation and letters on another.
0.25r + 0.5r - r = 0.5 +0.125
-0.75r = 0.625 divide both sides by -0.75
r = -0.125
Because the discriminant is less than zero, there are no real solutions in the equation.