6. The petrol in a petrol can weighs 2000g. The density of petrol is 0.8g/cmº. What is the volume of the petrol in the can in a) cm
b)litres (1000cmp=1 litre)

answer; how far out of place which the object finished relative to the starting location;

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

conservation of mass

mass before something happens = mass afterwards