Aparabola with vertex (h, k) and a vertical axis of symmetry is modeled by the equation y - k = a(x - h)2. determine the vertex for a parabola modeled by y = (x − 5)2 + 8

Afitness center has 2 membership plans one has a low dollar sign up fee of 15 dollars and costs 38 dollars per month to join. a second plan has a higher sign up fee of 78 dollars but a lower monthly fee of 31 dollars for what number of days of the month is the coat the same