To solve for the width and the length of the pool, you will use the formula for finding the volume of a rectangular prism. You will represent the length and the width of the pool in terms of w, the width.
Please see the attached picture for the work.
The width of the pool is 20 feet.
The length of the pool is 3 x 20 ft or 60 feet.
You plug in f(x) into where x is within g(x) so you get G(f(x))=(X+6)^4
If you would like to know the value of the 2.9% tax, you can calculate this using the following steps:
2.9% tax of $46 shoes = 2.9% * 46 = 2.9/100 * 46 = $1.334
If you would like to know what is the whole price you have to pay for the shoes (including the tax), you have to add $46 and $1.334:
$46 + $1.334 = $47.334