Melody

What about it?

$${\mathtt{a}}{\mathtt{\,-\,}}{\frac{{\frac{{\frac{{\mathtt{2}}}{{\mathtt{3}}}}{\mathtt{\,\times\,}}{\mathtt{b1}}}{{\mathtt{6}}}}{\mathtt{\,\times\,}}{\mathtt{c2}}}{{\mathtt{9}}}}$$

Is this your intended question?

Your question doesn't make sense but I think that you are asking for this to be solved.

$$\\1600x^3+1200x^2+800x = 4000\\
4x^3+3x^2+2x = 10\\
4x^3+3x^2+2x-10 = 0\\$$

The only real answer (from the graph) is

approx = 1.05

the question asks  " How many more dollars ...." that implies  a subtraction and a worked answer.

okay anon - you have been very patient with us :)

$$\\$monthly weight lose $\ge \frac{35-28}{6}\\\\
$monthly weight lose $\ge \frac{7}{6}\;lbs\\\\$$

Pet therapy does not seem to have made you placid.  I guess nothing works all the time.  

Thanks Geno, that looked like a challenge  

Thank you Alan, this was a great question and answer :))

You should not use that kind of language on the forum.  There are children about.

You really are just so Nauseating    

Type it into the site calc as  

asin(4/6)   you may need to press = on the actual calc.

asin is the same as inverse sine. 

Make sure the calc is set to degrees  (toggle button on the bottom left)