X^2+10x-y+15=0 what is the vertex of this parabola?

Which of the binomials below is a factor of this trinominal? x^2-13+30

The difference between tax advoidance and tax evasion

Joseph haydn pet store offers wide variety of leashes for dogs. the store purchases one popular type of leash from its manufacturer for $4.38 each. joseph haydn pets marks up leashes at a rate of 238% of cost. what is the retail price of the popular leash?