please help me solve these as fast as possible

1. Given / (x) =- 58 + 10x - 5 a) Express the function in factored form and determine the vertex. (4 marks) bj Identify the zeros, the axis of symmetry, and the direction of opening (3 marks) c) Sketch the graph (2 marks) 8- TITTT 10 -8 -6 -4 -2 2 6 8 10 6 CO 10 2. For each function, state whether the function will have a maximum or a minimum value. Calculate the maximum or minimum value, and the value of x where the optimal value occurs. (7 marks ) ja) y = -2( x + 6) + 21 ,b) [(x) = 2x - 8x + 4