Both equal g(x) so put them together
-x+5=3 then solve for x
-x=3-5
-x=-2
-2 divided by -x =2
x=2
We need to see the rest of the question...
1/10 is the probability.
You find this by putting 25/250 and simplifying.
The inequality you require is
The number of bottles left at the end of each day is 48 - 3x. So it is:-
48 - 3x < 10
Solving the inequality to find the last part of question:-
-3x < 10 - 48
-3x < -38
x > 38/3 = 12 2/3
So answer is 13 days.