Question 1114738
For part (A)
{{{-55a^2+5117a-54421=40000}}}
{{{-55a^2+5117a-94421=0}}}

General solution for quadratic equation:
{{{a=(-5117+- sqrt(5117^2-4*(-55*(-94421)))/(-2*55)}}}

{{{a=(-5117+- sqrt(5117^2-4*55*94421))/(-2*55)}}}

{{{a=(5117+- sqrt(5117^2-4*55*94421))/(2*55)}}}


{{{a=(5117+- sqrt(5411069))/(2*55)}}}
Compute this and take the value which makes sense.