the state income tax where kristin lives is levied at the rate of p\%p% of the first \$ 28000$28000 of annual income plus (p 2)\%(p 2)% of any amount above \$ 28000$28000. kristin noticed that the state income tax she paid amounted to (p 0.25)\%(p 0.25)% of her annual income. what was her annual income?