X/y=z
if we know x and z
solve for y
x/y=z
times both sides by y
x=zy
divide both sides by z
x/z=y
therefor
(x^4– 3x2 + 4x – 3)/?=(x^2+x-3)
so

=?
solve
first factor them

=?
x^2-x+1=?
the poly is x^2-x+1
In a rectangular triangle
.
We have 
Therefore opposite = 3uints and adjacent = 4units.

We need the length of hypotenuse.
Use the Pythagorean theorem:

Substitute:

A. $19.98
b. $419.77
i think thats the answer
0.7(3s+4)-1.1s=7.9 equals s=5.1