A whole number is defined as any non-negative integer that has no decimals. Therefore, the lowest whole number to make this true is 0, because 0/9 equals 0. 0 is, obviously, less than 700.
0.765 (100) + .06 (.0765 x 100)
76.5 + .06 (76.5)
76.5 + 4.59 = 81.09 Chris will pay $81.09
A better way ( if you don't care to know the tax just the bottom line of what it will cost) would be to do:
0.765x x 1.06 = 76.5 x 1.06 = $81.09 too.
Why the 1 in front of the .06? The one includes the price of the coat so you don't have to add the tax on after.
Think about it like this. When you buy something you pay (even with an employee
discount) for all of it (100%) + the tax (in this case, it's 6%) So you pay 106% of the cost of the item. 106% = 1.06
It will be a discrete graph, where there is no dependant nor independent variables, they are not related by any means.
Hope this helps.
Well, it really depends on the context they are in. For instance,

is different than

or

or

They all are interpret differently. For instance, one is a line, another is a square and one is a cube.