Answer:
7.1 hours
Step-by-step explanation:
Given data
Let the number of hours taken to fill the pool be x
the current quantity is 1/2 the capacity of the pool
we are given that the rate of flow = 4.75 in per hour
let the total amount of water after x hours be y, the expression for the quantity of water is given as

if y= 33.75 in, let us find x

divide both sides by 4.75

Hence, it will take 7.1 hours
It is 0.0411764706 when divided with a calculator. In a scientific notation it would be 4.11764706 x 10^(-2).
F=R G=S H=T
FG≈RS GH≈ST FH≈RT
The equation is
5x - 13 = 3x + 21
when solved, we get
x = 17