The answer to your question above would be: 7z-2/z-7
Answer:
Step-by-step explanation:
Given that,
A bricklayer needs to order 6300kg of building sand.
1 grain of this sand weighs 
.
We need to find how many grains of sand are there in 6300 kg.
It can be just calculated as follows :
1 grain of sand =
or
= 90000000 grans of sand
So, 6300 kg is equal to .
So all u have to do is say all the x values that have a point (the domain) and all the y values that have a point (the range). If it is continuous, like a line, then u say all the points between two points. For example the range of the bottom right is [-1,5]. If it goes to infinity or negative infinity, you say something like (-infinity,infinity). With the sideways 8 of course. Btw, (-infinity, infinity) is the domain of the bottom right ;D
