Convert the fractional part to a decimal, then add the result to the whole number part.
3.348
If x equals the number, then seven times the number is 7x; three less than that is 7x-3.
I believe your answer is required in Rise/Run form.
Rise is -1 and Run is +2
so
-1/2
The volume of a cylinder is given by the following formula:

Where r is the radius and h is the height of the cylinder.
By replacing 8 for r and 6 for h into the above formula, we get:

Then, the volume of the cylinder equals 1205.76 units³