4. Write the quadratic function in vertex form. y = x4 - 6x + 7 (2 points) Oy = ( x + 3)2 + 2 Oy = ( x - 3) 2 - 2 Oy = ( x + 3)2 - 2 Oy = ( x - 3) 2 + 2 5. A projectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 640t. After how many seconds does the projectile take to reach its maximum height? Show your work for full credit. (2 points)1. Find the vertex of the graph of the function. f(x) = (x - 10)2 + 2 (2 points) O (0, 10) O ( 2, 0 ) O (10, 2) O (2, 10) 2. Find the vertex of the graph of the function. f(x) = 4x2 + 24x + 32 (2 points) O (5, 4) O ( - 3, - 4) O ( -4, - 3) O ( 4, 5 ) 3. Find the axis of symmetry of the graph of the function. f(x) = 2x2 - 4x - 1 (2 points) X = 0 O X = 4 O X = -3 x =1