F(5) would be 16. because f(1) is only 3.2 so if you multiply 3.2 x 5 you will get 16
From inspecting the graph, you can identify the y-intercept and the slope of the line shown.
The y-intercept is 200 gallons.
The slope is
75-200
m = ------------- = -12.5 gallons/minute
10 - 0
Thus, y = 200 gallons - [12.5 gallons/minute ]t
To answer the 2nd question, let t = 12 minutes and calculate y(12).
To determine how long it wld take to empty the tank, set the above formula equal to zero and solve the resulting equation for t.
At one shop the coat was £24 with the 1/5 off and £30 in the other shop where it was 25% off so therefore the first coat she saw is the cheapest I think
Note: sorry if I’m wrong
The answer is A the perimeter of rectangle A is z times the perimeter of rectangle B
A=10ft because A is 8ft so round that to the nearest ten your answer is 10ft
