34 = 28 - 2/5X
Move +28 to the other side. Sign changes from +28 to -28
34-28=28-28-2/5x
34-28=-2/5x
6=-2/5x
Multiply both sides by -5/2
6(-5/2)=-2/5(-5/2)x
Cross out 6 and 2, divide by 2 and becomes :
3*-5=-15=X
Answer: X=-15
I want to say 5.5 because I did 11 / 2 and got that so i know it’s wrong but yea
Answer:

Step-by-step explanation:
we know that
In this problem we have a exponential function of the form

where
y ----> represent the pool’s loss of water
x ----> the number of days
a is the initial value
a=25,700 gal
b ----> is the base
r=15%=15/100=0.15
b=(1-r)=1-0.15=0.85
The function is equal to
