The cost of water would be $615 as he needs 3 acre-feet of water for 205 acre/ft
Answer: From what you wrote the I think the ball is drop
At time 0 you are 7 meters above ground
You basically just need to solve for
1.5 =7t-4.9t^2
by rearrange the equation you get
4.9t^2-7t+1.5=0
by using Quadratic Formula
t=1.166s
G(x) = (25 - x)/5 First lets call g(x) by its other name - y
y = (25 - x)/5 Now switch the x and y
x = (25 - y)/5 Solve for y which is now the inverse - call this

5x = 25 - y
y = 25 - 5x this is the inverse so

= 25 - 5x
This is my answer.I hope this is useful.
She can walk 4.5 miles in 3 hours